diff --git a/src/app/tape/tmainwindow.cpp b/src/app/tape/tmainwindow.cpp
index 97d5f2f27..f434ddce4 100644
--- a/src/app/tape/tmainwindow.cpp
+++ b/src/app/tape/tmainwindow.cpp
@@ -615,12 +615,7 @@ bool TMainWindow::eventFilter(QObject *object, QEvent *event)
         if (event->type() == QEvent::KeyPress)
         {
             QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
-            if ((keyEvent->key() == Qt::Key_Enter) || (keyEvent->key() == Qt::Key_Return))
-            {
-                // Ignore Enter key
-                return true;
-            }
-            else if ((keyEvent->key() == Qt::Key_Period) && (keyEvent->modifiers() & Qt::KeypadModifier))
+            if ((keyEvent->key() == Qt::Key_Period) && (keyEvent->modifiers() & Qt::KeypadModifier))
             {
                 if (qApp->Settings()->GetOsSeparator())
                 {
@@ -1225,8 +1220,7 @@ void TMainWindow::Fx()
     DialogEditWrongFormula *dialog = new DialogEditWrongFormula(meash->GetData(), NULL_ID, this);
     dialog->setWindowTitle(tr("Edit measurement"));
     dialog->SetMeasurementsMode();
-    dialog->SetFormula(qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormula->toPlainText().replace("\n", " "),
-                                                          true));
+    dialog->SetFormula(qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormula->toPlainText(), true));
     const QString postfix = UnitsToStr(mUnit, true);//Show unit in dialog lable (cm, mm or inch)
     dialog->setPostfix(postfix);
 
@@ -1650,9 +1644,7 @@ void TMainWindow::SaveMValue()
 
     const QTableWidgetItem *nameField = ui->tableWidget->item(row, ColumnName);
 
-    // Replace line return character with spaces for calc if exist
     QString text = ui->plainTextEditFormula->toPlainText();
-    text.replace("\n", " ");
 
     QTableWidgetItem *formulaField = ui->tableWidget->item(row, ColumnFormula);
     if (formulaField->text() == text)
@@ -2639,7 +2631,6 @@ bool TMainWindow::EvalFormula(const QString &formula, bool fromUser, VContainer
             {
                 f = formula;
             }
-            f.replace("\n", " ");
             QScopedPointer<Calculator> cal(new Calculator());
             qreal result = cal->EvalFormula(data->DataVariables(), f);
 
diff --git a/src/app/valentina/dialogs/dialogfinalmeasurements.cpp b/src/app/valentina/dialogs/dialogfinalmeasurements.cpp
index d23995a44..77bc5ce70 100644
--- a/src/app/valentina/dialogs/dialogfinalmeasurements.cpp
+++ b/src/app/valentina/dialogs/dialogfinalmeasurements.cpp
@@ -392,7 +392,6 @@ void DialogFinalMeasurements::SaveFormula()
 
     // Replace line return character with spaces for calc if exist
     QString text = ui->plainTextEditFormula->toPlainText();
-    text.replace("\n", " ");
 
     QTableWidgetItem *formulaField = ui->tableWidget->item(row, 2);
     if (formulaField->text() == text)
@@ -479,7 +478,7 @@ void DialogFinalMeasurements::Fx()
 
     QScopedPointer<DialogEditWrongFormula> dialog(new DialogEditWrongFormula(&m_data, NULL_ID, this));
     dialog->setWindowTitle(tr("Edit measurement"));
-    dialog->SetFormula(qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormula->toPlainText().replace("\n", " "),
+    dialog->SetFormula(qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormula->toPlainText(),
                                                           qApp->Settings()->GetOsSeparator()));
     const QString postfix = UnitsToStr(qApp->patternUnit(), true);
     dialog->setPostfix(postfix);//Show unit in dialog lable (cm, mm or inch)
@@ -600,7 +599,6 @@ bool DialogFinalMeasurements::EvalUserFormula(const QString &formula, bool fromU
             {
                 f = formula;
             }
-            f.replace("\n", " ");
             QScopedPointer<Calculator> cal(new Calculator());
             const qreal result = cal->EvalFormula(m_data.DataVariables(), f);
 
@@ -719,11 +717,9 @@ qreal DialogFinalMeasurements::EvalFormula(const QString &formula, bool &ok)
     {
         try
         {
-            QString f = formula;
             // Replace line return character with spaces for calc if exist
-            f.replace("\n", " ");
             QScopedPointer<Calculator> cal(new Calculator());
-            result = cal->EvalFormula(m_data.DataVariables(), f);
+            result = cal->EvalFormula(m_data.DataVariables(), formula);
 
             if (qIsInf(result) || qIsNaN(result))
             {
diff --git a/src/app/valentina/dialogs/dialogincrements.cpp b/src/app/valentina/dialogs/dialogincrements.cpp
index 16dc9ee34..c386d343f 100644
--- a/src/app/valentina/dialogs/dialogincrements.cpp
+++ b/src/app/valentina/dialogs/dialogincrements.cpp
@@ -357,7 +357,6 @@ bool DialogIncrements::EvalIncrementFormula(const QString &formula, bool fromUse
             {
                 f = formula;
             }
-            f.replace("\n", " ");
             QScopedPointer<Calculator> cal(new Calculator());
             const qreal result = cal->EvalFormula(data->DataVariables(), f);
 
@@ -1138,9 +1137,7 @@ void DialogIncrements::SaveIncrFormula()
 
     const QTableWidgetItem *nameField = table->item(row, 0);
 
-    // Replace line return character with spaces for calc if exist
     QString text = textEdit->toPlainText();
-    text.replace("\n", " ");
 
     QTableWidgetItem *formulaField = table->item(row, 2);
     if (formulaField->text() == text)
@@ -1286,7 +1283,7 @@ void DialogIncrements::Fx()
     dialog->setWindowTitle(tr("Edit increment"));
     incrementMode ? dialog->SetIncrementsMode() : dialog->SetPreviewCalculationsMode();
 
-    dialog->SetFormula(qApp->TrVars()->TryFormulaFromUser(plainTextEditFormula->toPlainText().replace("\n", " "),
+    dialog->SetFormula(qApp->TrVars()->TryFormulaFromUser(plainTextEditFormula->toPlainText(),
                                                           qApp->Settings()->GetOsSeparator()));
     const QString postfix = UnitsToStr(qApp->patternUnit(), true);
     dialog->setPostfix(postfix);//Show unit in dialog lable (cm, mm or inch)
diff --git a/src/app/valentina/mainwindowsnogui.cpp b/src/app/valentina/mainwindowsnogui.cpp
index badfe2046..35ac34fbe 100644
--- a/src/app/valentina/mainwindowsnogui.cpp
+++ b/src/app/valentina/mainwindowsnogui.cpp
@@ -1654,11 +1654,8 @@ bool MainWindowsNoGUI::ExportFMeasurementsToCSVData(const QString &fileName, boo
         {
             try
             {
-                QString f = m.formula;
-                // Replace line return character with spaces for calc if exist
-                f.replace("\n", " ");
                 QScopedPointer<Calculator> cal(new Calculator());
-                const qreal result = cal->EvalFormula(completeData.DataVariables(), f);
+                const qreal result = cal->EvalFormula(completeData.DataVariables(), m.formula);
 
                 csv.setText(i, 1, qApp->LocaleToString(result)); // value
 
diff --git a/src/app/valentina/xml/vpattern.cpp b/src/app/valentina/xml/vpattern.cpp
index bfc1188ce..7560d77c3 100644
--- a/src/app/valentina/xml/vpattern.cpp
+++ b/src/app/valentina/xml/vpattern.cpp
@@ -3239,11 +3239,8 @@ qreal VPattern::EvalFormula(VContainer *data, const QString &formula, bool *ok)
     {
         try
         {
-            // Replace line return character with spaces for calc if exist
-            QString f = formula;
-            f.replace("\n", " ");
             QScopedPointer<Calculator> cal(new Calculator());
-            const qreal result = cal->EvalFormula(data->DataVariables(), f);
+            const qreal result = cal->EvalFormula(data->DataVariables(), formula);
 
             (qIsInf(result) || qIsNaN(result)) ? *ok = false : *ok = true;
             return result;
diff --git a/src/libs/ifc/xml/vabstractpattern.cpp b/src/libs/ifc/xml/vabstractpattern.cpp
index fa1eea53b..a156cb93a 100644
--- a/src/libs/ifc/xml/vabstractpattern.cpp
+++ b/src/libs/ifc/xml/vabstractpattern.cpp
@@ -2036,6 +2036,11 @@ bool VAbstractPattern::IsVariable(const QString &token) const
         }
     }
 
+    if (token.startsWith('#'))
+    {
+        return true;
+    }
+
     return false;
 }
 
diff --git a/src/libs/qmuparser/qmuparserbase.cpp b/src/libs/qmuparser/qmuparserbase.cpp
index 9d35b608a..bc69f66a0 100644
--- a/src/libs/qmuparser/qmuparserbase.cpp
+++ b/src/libs/qmuparser/qmuparserbase.cpp
@@ -66,11 +66,11 @@ QmuParserBase::QmuParserBase()
       m_decimalPoint(QLocale::c().decimalPoint()),
       m_thousandsSeparator(QLocale::c().groupSeparator()),
       m_FunDef(),
+      m_pTokenReader(),
       m_pParseFormula(&QmuParserBase::ParseString),
       m_vRPN(),
       m_vStringBuf(),
       m_vStringVarBuf(),
-      m_pTokenReader(),
       m_PostOprtDef(),
       m_InfixOprtDef(),
       m_OprtDef(),
@@ -102,11 +102,11 @@ QmuParserBase::QmuParserBase(const QmuParserBase &a_Parser)
       m_decimalPoint(a_Parser.getDecimalPoint()),
       m_thousandsSeparator(a_Parser.getThousandsSeparator()),
       m_FunDef(),
+      m_pTokenReader(),
       m_pParseFormula(&QmuParserBase::ParseString),
       m_vRPN(),
       m_vStringBuf(),
       m_vStringVarBuf(),
-      m_pTokenReader(),
       m_PostOprtDef(),
       m_InfixOprtDef(),
       m_OprtDef(),
diff --git a/src/libs/qmuparser/qmuparserbase.h b/src/libs/qmuparser/qmuparserbase.h
index 6b3d6bbb4..e2f61cb0b 100644
--- a/src/libs/qmuparser/qmuparserbase.h
+++ b/src/libs/qmuparser/qmuparserbase.h
@@ -134,11 +134,17 @@ public:
     void  setThousandsSeparator(const QChar &c);
 
 protected:
+    /**
+     * @brief Typedef for the token reader.
+     */
+    typedef QmuParserTokenReader token_reader_type;
+
     static const QStringList c_DefaultOprt;
     QLocale m_locale;///< The locale used by the parser
     QChar m_decimalPoint;
     QChar m_thousandsSeparator;
     funmap_type  m_FunDef;         ///< Map of function names and pointers.
+    std::unique_ptr<token_reader_type> m_pTokenReader; ///< Managed pointer to the token reader object.
     static bool g_DbgDumpCmdCode;
     static bool g_DbgDumpStack;
     void AddCallback(const QString &a_strName, const QmuParserCallback &a_Callback, funmap_type &a_Storage,
@@ -204,11 +210,6 @@ private:
      */
     typedef QVector<QString> stringbuf_type;
 
-    /**
-     * @brief Typedef for the token reader.
-     */
-    typedef QmuParserTokenReader token_reader_type;
-
     /**
      * @brief Type used for parser tokens.
      */
@@ -229,8 +230,6 @@ private:
     mutable stringbuf_type    m_vStringBuf; ///< String buffer, used for storing string function arguments
     stringbuf_type            m_vStringVarBuf;
 
-    std::unique_ptr<token_reader_type> m_pTokenReader; ///< Managed pointer to the token reader object.
-
     funmap_type  m_PostOprtDef;    ///< Postfix operator callbacks
     funmap_type  m_InfixOprtDef;   ///< unary infix operator.
     funmap_type  m_OprtDef;        ///< Binary operator callbacks
diff --git a/src/libs/qmuparser/qmuparsertokenreader.cpp b/src/libs/qmuparser/qmuparsertokenreader.cpp
index 3c52d57ae..74e9db1bf 100644
--- a/src/libs/qmuparser/qmuparsertokenreader.cpp
+++ b/src/libs/qmuparser/qmuparsertokenreader.cpp
@@ -932,17 +932,25 @@ bool QmuParserTokenReader::IsUndefVarTok ( token_type &a_Tok )
     // If a factory is available implicitely create new variables
     if ( m_pFactory )
     {
-        qreal *fVar = m_pFactory ( strTok, m_pFactoryData );
-        a_Tok.SetVar ( fVar, strTok );
+        try
+        {
+            qreal *fVar = m_pFactory ( strTok, m_pFactoryData );
+            a_Tok.SetVar ( fVar, strTok );
 
-        // Do not use m_pParser->DefineVar( strTok, fVar );
-        // in order to define the new variable, it will clear the
-        // m_UsedVar array which will kill previousely defined variables
-        // from the list
-        // This is safe because the new variable can never override an existing one
-        // because they are checked first!
-        ( *m_pVarDef ) [strTok] = fVar;
-        m_UsedVar[strTok] = fVar;  // Add variable to used-var-list
+            // Do not use m_pParser->DefineVar( strTok, fVar );
+            // in order to define the new variable, it will clear the
+            // m_UsedVar array which will kill previousely defined variables
+            // from the list
+            // This is safe because the new variable can never override an existing one
+            // because they are checked first!
+            ( *m_pVarDef ) [strTok] = fVar;
+            m_UsedVar[strTok] = fVar;  // Add variable to used-var-list
+        }
+        catch (const qmu::QmuParserError &e)
+        {
+            Q_UNUSED(e)
+            return false;
+        }
     }
     else
     {
diff --git a/src/libs/qmuparser/qmutokenparser.cpp b/src/libs/qmuparser/qmutokenparser.cpp
index df538db5e..82e986b68 100644
--- a/src/libs/qmuparser/qmutokenparser.cpp
+++ b/src/libs/qmuparser/qmutokenparser.cpp
@@ -83,6 +83,7 @@ QmuTokenParser::QmuTokenParser(const QString &formula, bool osSeparator,
 
     SetExpr(formula);
     //Need run for making tokens. Don't catch exception here, because we want know if formula has error.
+    m_pTokenReader->IgnoreUndefVar(true);
     Eval();
 }
 
diff --git a/src/libs/vformat/vmeasurements.cpp b/src/libs/vformat/vmeasurements.cpp
index 455715a05..f5706771b 100644
--- a/src/libs/vformat/vmeasurements.cpp
+++ b/src/libs/vformat/vmeasurements.cpp
@@ -881,11 +881,8 @@ qreal VMeasurements::EvalFormula(VContainer *data, const QString &formula, bool
     {
         try
         {
-            // Replace line return character with spaces for calc if exist
-            QString f = formula;
-            f.replace("\n", " ");
             QScopedPointer<Calculator> cal(new Calculator());
-            const qreal result = cal->EvalFormula(data->DataVariables(), f);
+            const qreal result = cal->EvalFormula(data->DataVariables(), formula);
 
             (qIsInf(result) || qIsNaN(result)) ? *ok = false : *ok = true;
             return result;
diff --git a/src/libs/vpatterndb/calculator.cpp b/src/libs/vpatterndb/calculator.cpp
index 5f8e8edc4..bcd438c75 100644
--- a/src/libs/vpatterndb/calculator.cpp
+++ b/src/libs/vpatterndb/calculator.cpp
@@ -53,11 +53,15 @@
  *
  */
 Calculator::Calculator()
-    :QmuFormulaBase()
+    : QmuFormulaBase(),
+      m_varsValues(),
+      m_vars(nullptr)
 {
     InitCharSets();
-    setAllowSubexpressions(false);//Only one expression per time
 
+    // Parser doesn't know any variable on this stage. So, we just use variable factory that for each unknown variable
+    // set value to 0.
+    SetVarFactory(VarFactory, this);
     SetSepForEval();
 }
 
@@ -82,71 +86,33 @@ qreal Calculator::EvalFormula(const QHash<QString, QSharedPointer<VInternalVaria
         return result;
     }
 
-    // Parser doesn't know any variable on this stage. So, we just use variable factory that for each unknown variable
-    // set value to 0.
-    SetVarFactory(AddVariable, this);
     SetSepForEval();//Reset separators options
-
+    m_vars = vars;
     SetExpr(formula);
 
-    result = Eval();
-
-    QMap<int, QString> tokens = this->GetTokens();
-
-    // Remove "-" from tokens list if exist. If don't do that unary minus operation will broken.
-    RemoveAll(tokens, QStringLiteral("-"));
-
-    for (int i = 0; i < builInFunctions.size(); ++i)
-    {
-        if (tokens.isEmpty())
-        {
-            break;
-        }
-        RemoveAll(tokens, builInFunctions.at(i));
-    }
-
-    if (tokens.isEmpty())
-    {
-        return result; // We have found only numbers in expression.
-    }
-
-    // Add variables to parser because we have deal with expression with variables.
-    InitVariables(vars, tokens, formula);
+    m_pTokenReader->IgnoreUndefVar(true);
     return Eval();
 }
 
 //---------------------------------------------------------------------------------------------------------------------
-/**
- * @brief Calculator::InitVariables add variables to parser.
- *
- * For optimization purpose we try don't add variables that we don't need.
- *
- * @param vars list of variables.
- * @param tokens all tokens (measurements names, variables with lengths) that parser have found in expression.
- * @param formula expression, need for throwing better error message.
- */
-void Calculator::InitVariables(const QHash<QString, QSharedPointer<VInternalVariable> > *vars,
-                               const QMap<int, QString> &tokens, const QString &formula)
+qreal *Calculator::VarFactory(const QString &a_szName, void *a_pUserData)
 {
-    QMap<int, QString>::const_iterator i = tokens.constBegin();
-    while (i != tokens.constEnd())
+    Q_UNUSED(a_szName)
+    Calculator *calc = static_cast<Calculator *>(a_pUserData);
+
+    if (calc->m_vars != nullptr && calc->m_vars->contains(a_szName))
     {
-        bool found = false;
-        if (vars->contains(i.value()))
-        {
-            DefineVar(i.value(), vars->value(i.value())->GetValue());
-            found = true;
-        }
-
-        if (found == false && builInFunctions.contains(i.value()))
-        {// We have found built-in function
-            found = true;
-        }
-
-        if (found == false)
-        {
-            throw qmu::QmuParserError (qmu::ecUNASSIGNABLE_TOKEN, i.value(), formula, i.key());
-        }
-        ++i;
+        QSharedPointer<qreal> val(new qreal(*calc->m_vars->value(a_szName)->GetValue()));
+        calc->m_varsValues.append(val);
+        return val.data();
     }
+
+    if (a_szName.startsWith('#'))
+    {
+        QSharedPointer<qreal> val(new qreal(0));
+        calc->m_varsValues.append(val);
+        return val.data();
+    }
+
+    throw qmu::QmuParserError (qmu::ecUNASSIGNABLE_TOKEN);
 }
diff --git a/src/libs/vpatterndb/calculator.h b/src/libs/vpatterndb/calculator.h
index ff6e6864d..07180c73f 100644
--- a/src/libs/vpatterndb/calculator.h
+++ b/src/libs/vpatterndb/calculator.h
@@ -64,11 +64,12 @@ public:
     virtual ~Calculator() Q_DECL_EQ_DEFAULT;
 
     qreal EvalFormula(const QHash<QString, QSharedPointer<VInternalVariable> > *vars, const QString &formula);
+protected:
+    static qreal* VarFactory(const QString &a_szName, void *a_pUserData);
 private:
     Q_DISABLE_COPY(Calculator)
-
-    void InitVariables(const QHash<QString, QSharedPointer<VInternalVariable> > *vars, const QMap<int, QString> &tokens,
-                       const QString &formula);
+    QVector<QSharedPointer<qreal>> m_varsValues;
+    const QHash<QString, QSharedPointer<VInternalVariable> > *m_vars;
 };
 
 #endif // CALCULATOR_H
diff --git a/src/libs/vpatterndb/vformula.cpp b/src/libs/vpatterndb/vformula.cpp
index 895c5cf9c..3ee27015b 100644
--- a/src/libs/vpatterndb/vformula.cpp
+++ b/src/libs/vpatterndb/vformula.cpp
@@ -65,9 +65,7 @@ VFormula::VFormula(const QString &formula, const VContainer *container)
       postfix(QString()),
       _error(true),
       dValue(0)
-{
-    this->formula.replace("\n", " ");// Replace line return with spaces for calc if exist
-}
+{}
 
 //---------------------------------------------------------------------------------------------------------------------
 VFormula &VFormula::operator=(const VFormula &formula)
@@ -145,7 +143,6 @@ void VFormula::SetFormula(const QString &value, FormulaType type)
         {
             formula = value;
         }
-        formula.replace("\n", " ");// Replace line return with spaces for calc if exist
     }
 }
 
diff --git a/src/libs/vpatterndb/vpiecenode.cpp b/src/libs/vpatterndb/vpiecenode.cpp
index 883a7ef06..66c2ffb4d 100644
--- a/src/libs/vpatterndb/vpiecenode.cpp
+++ b/src/libs/vpatterndb/vpiecenode.cpp
@@ -47,8 +47,6 @@ qreal EvalFormula(const VContainer *data, QString formula)
     {
         try
         {
-            // Replace line return character with spaces for calc if exist
-            formula.replace("\n", " ");
             QScopedPointer<Calculator> cal(new Calculator());
             const qreal result = cal->EvalFormula(data->DataVariables(), formula);
 
diff --git a/src/libs/vpatterndb/vpiecepath.cpp b/src/libs/vpatterndb/vpiecepath.cpp
index 05e2fab0b..24fbd649c 100644
--- a/src/libs/vpatterndb/vpiecepath.cpp
+++ b/src/libs/vpatterndb/vpiecepath.cpp
@@ -800,11 +800,8 @@ bool VPiecePath::IsVisible(const QHash<QString, QSharedPointer<VInternalVariable
     bool visible = true;
     try
     {
-        QString formula  = GetVisibilityTrigger();
-        // Replace line return character with spaces for calc if exist
-        formula.replace("\n", " ");
         QScopedPointer<Calculator> cal(new Calculator());
-        const qreal result = cal->EvalFormula(vars, formula);
+        const qreal result = cal->EvalFormula(vars, GetVisibilityTrigger());
 
         if (qIsInf(result) || qIsNaN(result))
         {
diff --git a/src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp b/src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp
index 5e6ab5d88..160ca363b 100644
--- a/src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp
+++ b/src/libs/vtools/dialogs/support/dialogeditwrongformula.cpp
@@ -129,7 +129,6 @@ DialogEditWrongFormula::~DialogEditWrongFormula()
 void DialogEditWrongFormula::DialogAccepted()
 {
     formula = ui->plainTextEditFormula->toPlainText();
-    formula.replace("\n", " ");
     emit DialogClosed(QDialog::Accepted);
     accepted();
 }
diff --git a/src/libs/vtools/dialogs/tools/dialogalongline.cpp b/src/libs/vtools/dialogs/tools/dialogalongline.cpp
index 6e139545e..947552fca 100644
--- a/src/libs/vtools/dialogs/tools/dialogalongline.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogalongline.cpp
@@ -217,7 +217,6 @@ void DialogAlongLine::SaveData()
     pointName = ui->lineEditNamePoint->text();
 
     formula = ui->plainTextEditFormula->toPlainText();
-    formula.replace("\n", " ");
 
     VisToolAlongLine *line = qobject_cast<VisToolAlongLine *>(vis);
     SCASSERT(line != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogarc.cpp b/src/libs/vtools/dialogs/tools/dialogarc.cpp
index 4d1c268c8..3a7efcb94 100644
--- a/src/libs/vtools/dialogs/tools/dialogarc.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogarc.cpp
@@ -277,11 +277,8 @@ void DialogArc::ShowVisualization()
 void DialogArc::SaveData()
 {
     radius = ui->plainTextEditFormula->toPlainText();
-    radius.replace("\n", " ");
     f1 = ui->plainTextEditF1->toPlainText();
-    f1.replace("\n", " ");
     f2 = ui->plainTextEditF2->toPlainText();
-    f2.replace("\n", " ");
 
     VisToolArc *path = qobject_cast<VisToolArc *>(vis);
     SCASSERT(path != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogarcwithlength.cpp b/src/libs/vtools/dialogs/tools/dialogarcwithlength.cpp
index 3d45e1388..6343d4f03 100644
--- a/src/libs/vtools/dialogs/tools/dialogarcwithlength.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogarcwithlength.cpp
@@ -354,13 +354,8 @@ void DialogArcWithLength::ShowVisualization()
 void DialogArcWithLength::SaveData()
 {
     radius = ui->plainTextEditRadius->toPlainText();
-    radius.replace("\n", " ");
-
     f1 = ui->plainTextEditF1->toPlainText();
-    f1.replace("\n", " ");
-
     length = ui->plainTextEditLength->toPlainText();
-    length.replace("\n", " ");
 
     VisToolArcWithLength *path = qobject_cast<VisToolArcWithLength *>(vis);
     SCASSERT(path != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogbisector.cpp b/src/libs/vtools/dialogs/tools/dialogbisector.cpp
index 0ed0ca1e4..59cbfe281 100644
--- a/src/libs/vtools/dialogs/tools/dialogbisector.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogbisector.cpp
@@ -319,9 +319,7 @@ void DialogBisector::SetLineColor(const QString &value)
 void DialogBisector::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
-
     formula = ui->plainTextEditFormula->toPlainText();
-    formula.replace("\n", " ");
 
     VisToolBisector *line = qobject_cast<VisToolBisector *>(vis);
     SCASSERT(line != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogcurveintersectaxis.cpp b/src/libs/vtools/dialogs/tools/dialogcurveintersectaxis.cpp
index 9f42657ce..223370030 100644
--- a/src/libs/vtools/dialogs/tools/dialogcurveintersectaxis.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcurveintersectaxis.cpp
@@ -308,9 +308,7 @@ void DialogCurveIntersectAxis::ShowVisualization()
 void DialogCurveIntersectAxis::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
-
     formulaAngle = ui->plainTextEditFormula->toPlainText();
-    formulaAngle.replace("\n", " ");
 
     VisToolCurveIntersectAxis *line = qobject_cast<VisToolCurveIntersectAxis *>(vis);
     SCASSERT(line != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogcutarc.cpp b/src/libs/vtools/dialogs/tools/dialogcutarc.cpp
index c5d6bd7fd..35e24464d 100644
--- a/src/libs/vtools/dialogs/tools/dialogcutarc.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcutarc.cpp
@@ -144,7 +144,6 @@ void DialogCutArc::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
     formula = ui->plainTextEditFormula->toPlainText();
-    formula.replace("\n", " ");
 
     VisToolCutArc *path = qobject_cast<VisToolCutArc *>(vis);
     SCASSERT(path != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogcutspline.cpp b/src/libs/vtools/dialogs/tools/dialogcutspline.cpp
index 3dd349ad5..509b0b219 100644
--- a/src/libs/vtools/dialogs/tools/dialogcutspline.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcutspline.cpp
@@ -160,7 +160,6 @@ void DialogCutSpline::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
     formula = ui->plainTextEditFormula->toPlainText();
-    formula.replace("\n", " ");
 
     VisToolCutSpline *path = qobject_cast<VisToolCutSpline *>(vis);
     SCASSERT(path != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp b/src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp
index 93be086af..a54526d9d 100644
--- a/src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogcutsplinepath.cpp
@@ -160,7 +160,6 @@ void DialogCutSplinePath::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
     formula = ui->plainTextEditFormula->toPlainText();
-    formula.replace("\n", " ");
 
     VisToolCutSplinePath *path = qobject_cast<VisToolCutSplinePath *>(vis);
     SCASSERT(path != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogellipticalarc.cpp b/src/libs/vtools/dialogs/tools/dialogellipticalarc.cpp
index f3fac738e..5ecd35db2 100644
--- a/src/libs/vtools/dialogs/tools/dialogellipticalarc.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogellipticalarc.cpp
@@ -612,15 +612,10 @@ void DialogEllipticalArc::ShowVisualization()
 void DialogEllipticalArc::SaveData()
 {
     radius1 = ui->plainTextEditRadius1->toPlainText();
-    radius1.replace("\n", " ");
     radius2 = ui->plainTextEditRadius2->toPlainText();
-    radius2.replace("\n", " ");
     f1 = ui->plainTextEditF1->toPlainText();
-    f1.replace("\n", " ");
     f2 = ui->plainTextEditF2->toPlainText();
-    f2.replace("\n", " ");
     rotationAngle = ui->plainTextEditRotationAngle->toPlainText();
-    rotationAngle.replace("\n", " ");
 
     VisToolEllipticalArc *path = qobject_cast<VisToolEllipticalArc *>(vis);
     SCASSERT(path != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogendline.cpp b/src/libs/vtools/dialogs/tools/dialogendline.cpp
index 921479fa1..40b05d151 100644
--- a/src/libs/vtools/dialogs/tools/dialogendline.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogendline.cpp
@@ -344,12 +344,8 @@ void DialogEndLine::ShowVisualization()
 void DialogEndLine::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
-
     formulaLength = ui->plainTextEditFormula->toPlainText();
-    formulaLength.replace("\n", " ");
-
     formulaAngle = ui->plainTextEditAngle->toPlainText();
-    formulaAngle.replace("\n", " ");
 
     VisToolEndLine *line = qobject_cast<VisToolEndLine *>(vis);
     SCASSERT(line != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialoglineintersectaxis.cpp b/src/libs/vtools/dialogs/tools/dialoglineintersectaxis.cpp
index 0e385b1c1..85da3e08c 100644
--- a/src/libs/vtools/dialogs/tools/dialoglineintersectaxis.cpp
+++ b/src/libs/vtools/dialogs/tools/dialoglineintersectaxis.cpp
@@ -375,9 +375,7 @@ void DialogLineIntersectAxis::ShowVisualization()
 void DialogLineIntersectAxis::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
-
     formulaAngle = ui->plainTextEditFormula->toPlainText();
-    formulaAngle.replace("\n", " ");
 
     VisToolLineIntersectAxis *line = qobject_cast<VisToolLineIntersectAxis *>(vis);
     SCASSERT(line != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogmove.cpp b/src/libs/vtools/dialogs/tools/dialogmove.cpp
index 590d3ce5e..4560bb43d 100644
--- a/src/libs/vtools/dialogs/tools/dialogmove.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogmove.cpp
@@ -513,15 +513,9 @@ void DialogMove::ShowVisualization()
 void DialogMove::SaveData()
 {
     m_suffix = ui->lineEditSuffix->text();
-
     formulaAngle = ui->plainTextEditAngle->toPlainText();
-    formulaAngle.replace("\n", " ");
-
     formulaRotationAngle = ui->plainTextEditRotationAngle->toPlainText();
-    formulaRotationAngle.replace("\n", " ");
-
     formulaLength = ui->plainTextEditLength->toPlainText();
-    formulaLength.replace("\n", " ");
 
     VisToolMove *operation = qobject_cast<VisToolMove *>(vis);
     SCASSERT(operation != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialognormal.cpp b/src/libs/vtools/dialogs/tools/dialognormal.cpp
index 8bf3d09c6..8037117c1 100644
--- a/src/libs/vtools/dialogs/tools/dialognormal.cpp
+++ b/src/libs/vtools/dialogs/tools/dialognormal.cpp
@@ -198,7 +198,6 @@ void DialogNormal::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
     formula = ui->plainTextEditFormula->toPlainText();
-    formula.replace("\n", " ");
     angle = ui->doubleSpinBoxAngle->value();
 
     VisToolNormal *line = qobject_cast<VisToolNormal *>(vis);
diff --git a/src/libs/vtools/dialogs/tools/dialogpointfromcircleandtangent.cpp b/src/libs/vtools/dialogs/tools/dialogpointfromcircleandtangent.cpp
index 02b8e1a61..a9d5b617a 100644
--- a/src/libs/vtools/dialogs/tools/dialogpointfromcircleandtangent.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogpointfromcircleandtangent.cpp
@@ -302,15 +302,12 @@ void DialogPointFromCircleAndTangent::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
 
-    QString radius = ui->plainTextEditRadius->toPlainText();
-    radius.replace("\n", " ");
-
     VisToolPointFromCircleAndTangent *point = qobject_cast<VisToolPointFromCircleAndTangent *>(vis);
     SCASSERT(point != nullptr)
 
     point->setObject1Id(GetTangentPointId());
     point->setObject2Id(GetCircleCenterId());
-    point->setCRadius(radius);
+    point->setCRadius(ui->plainTextEditRadius->toPlainText());
     point->setCrossPoint(GetCrossCirclesPoint());
     point->RefreshGeometry();
 }
diff --git a/src/libs/vtools/dialogs/tools/dialogpointofcontact.cpp b/src/libs/vtools/dialogs/tools/dialogpointofcontact.cpp
index d1298f60a..123274e94 100644
--- a/src/libs/vtools/dialogs/tools/dialogpointofcontact.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogpointofcontact.cpp
@@ -220,7 +220,6 @@ void DialogPointOfContact::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
     radius = ui->plainTextEditFormula->toPlainText();
-    radius.replace("\n", " ");
 
     VisToolPointOfContact *line = qobject_cast<VisToolPointOfContact *>(vis);
     SCASSERT(line != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogpointofintersectioncircles.cpp b/src/libs/vtools/dialogs/tools/dialogpointofintersectioncircles.cpp
index ba7e16805..b06a9354d 100644
--- a/src/libs/vtools/dialogs/tools/dialogpointofintersectioncircles.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogpointofintersectioncircles.cpp
@@ -389,19 +389,13 @@ void DialogPointOfIntersectionCircles::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
 
-    QString c1Radius = ui->plainTextEditCircle2Radius->toPlainText();
-    c1Radius.replace("\n", " ");
-
-    QString c2Radius = ui->plainTextEditCircle2Radius->toPlainText();
-    c2Radius.replace("\n", " ");
-
     VisToolPointOfIntersectionCircles *point = qobject_cast<VisToolPointOfIntersectionCircles *>(vis);
     SCASSERT(point != nullptr)
 
     point->setObject1Id(GetFirstCircleCenterId());
     point->setObject2Id(GetSecondCircleCenterId());
-    point->setC1Radius(c1Radius);
-    point->setC2Radius(c2Radius);
+    point->setC1Radius(ui->plainTextEditCircle2Radius->toPlainText());
+    point->setC2Radius(ui->plainTextEditCircle2Radius->toPlainText());
     point->setCrossPoint(GetCrossCirclesPoint());
     point->RefreshGeometry();
 }
diff --git a/src/libs/vtools/dialogs/tools/dialogrotation.cpp b/src/libs/vtools/dialogs/tools/dialogrotation.cpp
index 151c907a3..c03b11e70 100644
--- a/src/libs/vtools/dialogs/tools/dialogrotation.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogrotation.cpp
@@ -372,9 +372,7 @@ void DialogRotation::ShowVisualization()
 void DialogRotation::SaveData()
 {
     m_suffix = ui->lineEditSuffix->text();
-
     formulaAngle = ui->plainTextEditFormula->toPlainText();
-    formulaAngle.replace("\n", " ");
 
     VisToolRotation *operation = qobject_cast<VisToolRotation *>(vis);
     SCASSERT(operation != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogshoulderpoint.cpp b/src/libs/vtools/dialogs/tools/dialogshoulderpoint.cpp
index e4e728b5a..783cdc8a4 100644
--- a/src/libs/vtools/dialogs/tools/dialogshoulderpoint.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogshoulderpoint.cpp
@@ -224,7 +224,6 @@ void DialogShoulderPoint::SaveData()
 {
     pointName = ui->lineEditNamePoint->text();
     formula = ui->plainTextEditFormula->toPlainText();
-    formula.replace("\n", " ");
 
     VisToolShoulderPoint *line = qobject_cast<VisToolShoulderPoint *>(vis);
     SCASSERT(line != nullptr)
diff --git a/src/libs/vtools/dialogs/tools/dialogspline.cpp b/src/libs/vtools/dialogs/tools/dialogspline.cpp
index 78373c7bd..62ec79b67 100644
--- a/src/libs/vtools/dialogs/tools/dialogspline.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogspline.cpp
@@ -444,16 +444,9 @@ void DialogSpline::EvalLength2()
 VSpline DialogSpline::CurrentSpline() const
 {
     QString angle1F = ui->plainTextEditAngle1F->toPlainText();
-    angle1F.replace("\n", " ");
-
     QString angle2F = ui->plainTextEditAngle2F->toPlainText();
-    angle2F.replace("\n", " ");
-
     QString length1F = ui->plainTextEditLength1F->toPlainText();
-    length1F.replace("\n", " ");
-
     QString length2F = ui->plainTextEditLength2F->toPlainText();
-    length2F.replace("\n", " ");
 
     const QHash<QString, QSharedPointer<VInternalVariable> > *vars = data->DataVariables();
 
diff --git a/src/libs/vtools/dialogs/tools/dialogsplinepath.cpp b/src/libs/vtools/dialogs/tools/dialogsplinepath.cpp
index 67a3d26da..888be4212 100644
--- a/src/libs/vtools/dialogs/tools/dialogsplinepath.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogsplinepath.cpp
@@ -306,7 +306,7 @@ void DialogSplinePath::Angle1Changed()
         SCASSERT(item != nullptr)
         VSplinePoint p = qvariant_cast<VSplinePoint>(item->data(Qt::UserRole));
 
-        const QString angle1F = ui->plainTextEditAngle1F->toPlainText().replace("\n", " ");
+        const QString angle1F = ui->plainTextEditAngle1F->toPlainText();
         const qreal angle1 = Visualization::FindValFromUser(angle1F, data->DataVariables());
         p.SetAngle1(angle1, VTranslateVars::TryFormulaFromUser(angle1F, qApp->Settings()->GetOsSeparator()));
 
@@ -340,7 +340,7 @@ void DialogSplinePath::Angle2Changed()
         SCASSERT(item != nullptr)
         VSplinePoint p = qvariant_cast<VSplinePoint>(item->data(Qt::UserRole));
 
-        const QString angle2F = ui->plainTextEditAngle2F->toPlainText().replace("\n", " ");
+        const QString angle2F = ui->plainTextEditAngle2F->toPlainText();
         const qreal angle2 = Visualization::FindValFromUser(angle2F, data->DataVariables());
         p.SetAngle2(angle2, VTranslateVars::TryFormulaFromUser(angle2F, qApp->Settings()->GetOsSeparator()));
 
@@ -374,7 +374,7 @@ void DialogSplinePath::Length1Changed()
         SCASSERT(item != nullptr)
         VSplinePoint p = qvariant_cast<VSplinePoint>(item->data(Qt::UserRole));
 
-        const QString length1F = ui->plainTextEditLength1F->toPlainText().replace("\n", " ");
+        const QString length1F = ui->plainTextEditLength1F->toPlainText();
         const qreal length1 = Visualization::FindLengthFromUser(length1F, data->DataVariables());
         p.SetLength1(length1, VTranslateVars::TryFormulaFromUser(length1F, qApp->Settings()->GetOsSeparator()));
 
@@ -399,7 +399,7 @@ void DialogSplinePath::Length2Changed()
         SCASSERT(item != nullptr)
         VSplinePoint p = qvariant_cast<VSplinePoint>(item->data(Qt::UserRole));
 
-        const QString length2F = ui->plainTextEditLength2F->toPlainText().replace("\n", " ");
+        const QString length2F = ui->plainTextEditLength2F->toPlainText();
         const qreal length2 = Visualization::FindLengthFromUser(length2F, data->DataVariables());
         p.SetLength2(length2, VTranslateVars::TryFormulaFromUser(length2F, qApp->Settings()->GetOsSeparator()));
 
@@ -415,7 +415,7 @@ void DialogSplinePath::FXAngle1()
     auto dialog = new DialogEditWrongFormula(data, toolId, this);
     dialog->setWindowTitle(tr("Edit first control point angle"));
 
-    QString angle1F = VTranslateVars::TryFormulaFromUser(ui->plainTextEditAngle1F->toPlainText().replace("\n", " "),
+    QString angle1F = VTranslateVars::TryFormulaFromUser(ui->plainTextEditAngle1F->toPlainText(),
                                                          qApp->Settings()->GetOsSeparator());
 
     dialog->SetFormula(angle1F);
@@ -440,7 +440,7 @@ void DialogSplinePath::FXAngle2()
     auto dialog = new DialogEditWrongFormula(data, toolId, this);
     dialog->setWindowTitle(tr("Edit second control point angle"));
 
-    QString angle2F = VTranslateVars::TryFormulaFromUser(ui->plainTextEditAngle2F->toPlainText().replace("\n", " "),
+    QString angle2F = VTranslateVars::TryFormulaFromUser(ui->plainTextEditAngle2F->toPlainText(),
                                                          qApp->Settings()->GetOsSeparator());
 
     dialog->SetFormula(angle2F);
@@ -465,7 +465,7 @@ void DialogSplinePath::FXLength1()
     auto dialog = new DialogEditWrongFormula(data, toolId, this);
     dialog->setWindowTitle(tr("Edit first control point length"));
 
-    QString length1F = VTranslateVars::TryFormulaFromUser(ui->plainTextEditLength1F->toPlainText().replace("\n", " "),
+    QString length1F = VTranslateVars::TryFormulaFromUser(ui->plainTextEditLength1F->toPlainText(),
                                                           qApp->Settings()->GetOsSeparator());
 
     dialog->SetFormula(length1F);
@@ -490,7 +490,7 @@ void DialogSplinePath::FXLength2()
     auto dialog = new DialogEditWrongFormula(data, toolId, this);
     dialog->setWindowTitle(tr("Edit second control point length"));
 
-    QString length2F = VTranslateVars::TryFormulaFromUser(ui->plainTextEditLength2F->toPlainText().replace("\n", " "),
+    QString length2F = VTranslateVars::TryFormulaFromUser(ui->plainTextEditLength2F->toPlainText(),
                                                           qApp->Settings()->GetOsSeparator());
 
     dialog->SetFormula(length2F);
diff --git a/src/libs/vtools/dialogs/tools/dialogtool.cpp b/src/libs/vtools/dialogs/tools/dialogtool.cpp
index 04a005118..9f175d716 100644
--- a/src/libs/vtools/dialogs/tools/dialogtool.cpp
+++ b/src/libs/vtools/dialogs/tools/dialogtool.cpp
@@ -77,7 +77,7 @@ template <class T> class QSharedPointer;
 
 Q_LOGGING_CATEGORY(vDialog, "v.dialog")
 
-#define DIALOG_MAX_FORMULA_HEIGHT 64
+#define DIALOG_MAX_FORMULA_HEIGHT 80
 
 namespace
 {
@@ -401,12 +401,7 @@ bool DialogTool::eventFilter(QObject *object, QEvent *event)
         if (event->type() == QEvent::KeyPress)
         {
             QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
-            if ((keyEvent->key() == Qt::Key_Enter) || (keyEvent->key() == Qt::Key_Return))
-            {
-                // Ignore Enter key
-                return true;
-            }
-            else if ((keyEvent->key() == Qt::Key_Period) && (keyEvent->modifiers() & Qt::KeypadModifier))
+            if ((keyEvent->key() == Qt::Key_Period) && (keyEvent->modifiers() & Qt::KeypadModifier))
             {
                 if (qApp->Settings()->GetOsSeparator())
                 {
@@ -799,11 +794,8 @@ qreal DialogTool::Eval(const QString &text, bool &flag, QLabel *label, const QSt
     {
         try
         {
-            // Replace line return character with spaces for calc if exist
-            QString formula = text;
-            formula.replace("\n", " ");
             // Translate to internal look.
-            formula = qApp->TrVars()->FormulaFromUser(formula, qApp->Settings()->GetOsSeparator());
+            QString formula = qApp->TrVars()->FormulaFromUser(text, qApp->Settings()->GetOsSeparator());
             QScopedPointer<Calculator> cal(new Calculator());
             result = cal->EvalFormula(data->DataVariables(), formula);
 
diff --git a/src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp b/src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp
index feb521b54..301e3cfad 100644
--- a/src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp
+++ b/src/libs/vtools/dialogs/tools/piece/dialogpiecepath.cpp
@@ -1201,7 +1201,6 @@ void DialogPiecePath::SetPieceId(quint32 id)
 QString DialogPiecePath::GetFormulaSAWidth() const
 {
     QString width = ui->plainTextEditFormulaWidth->toPlainText();
-    width.replace("\n", " ");
     return qApp->TrVars()->TryFormulaFromUser(width, qApp->Settings()->GetOsSeparator());
 }
 
@@ -1305,7 +1304,6 @@ void DialogPiecePath::NewItem(const VPieceNode &node)
 QString DialogPiecePath::GetFormulaSAWidthBefore() const
 {
     QString width = ui->plainTextEditFormulaWidthBefore->toPlainText();
-    width.replace("\n", " ");
     return qApp->TrVars()->TryFormulaFromUser(width, qApp->Settings()->GetOsSeparator());
 }
 
@@ -1313,7 +1311,6 @@ QString DialogPiecePath::GetFormulaSAWidthBefore() const
 QString DialogPiecePath::GetFormulaSAWidthAfter() const
 {
     QString width = ui->plainTextEditFormulaWidthAfter->toPlainText();
-    width.replace("\n", " ");
     return qApp->TrVars()->TryFormulaFromUser(width, qApp->Settings()->GetOsSeparator());
 }
 
@@ -1321,7 +1318,6 @@ QString DialogPiecePath::GetFormulaSAWidthAfter() const
 QString DialogPiecePath::GetFormulaVisible() const
 {
     QString formula = ui->plainTextEditFormulaVisible->toPlainText();
-    formula.replace("\n", " ");
     return qApp->TrVars()->TryFormulaFromUser(formula, qApp->Settings()->GetOsSeparator());
 }
 
diff --git a/src/libs/vtools/dialogs/tools/piece/dialogplacelabel.cpp b/src/libs/vtools/dialogs/tools/piece/dialogplacelabel.cpp
index 7c6c6fad0..23fca1019 100644
--- a/src/libs/vtools/dialogs/tools/piece/dialogplacelabel.cpp
+++ b/src/libs/vtools/dialogs/tools/piece/dialogplacelabel.cpp
@@ -151,7 +151,7 @@ void DialogPlaceLabel::SetLabelType(PlaceLabelType type)
 //---------------------------------------------------------------------------------------------------------------------
 QString DialogPlaceLabel::GetWidth() const
 {
-    return qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormulaWidth->toPlainText().replace("\n", " "),
+    return qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormulaWidth->toPlainText(),
                                               qApp->Settings()->GetOsSeparator());
 }
 
@@ -177,7 +177,7 @@ void DialogPlaceLabel::SetWidth(const QString &value)
 //---------------------------------------------------------------------------------------------------------------------
 QString DialogPlaceLabel::GetHeight() const
 {
-    return qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormulaHeight->toPlainText().replace("\n", " "),
+    return qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormulaHeight->toPlainText(),
                                               qApp->Settings()->GetOsSeparator());
 }
 
@@ -203,7 +203,7 @@ void DialogPlaceLabel::SetHeight(const QString &value)
 //---------------------------------------------------------------------------------------------------------------------
 QString DialogPlaceLabel::GetAngle() const
 {
-    return qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormulaAngle->toPlainText().replace("\n", " "),
+    return qApp->TrVars()->TryFormulaFromUser(ui->plainTextEditFormulaAngle->toPlainText(),
                                               qApp->Settings()->GetOsSeparator());
 }
 
diff --git a/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp b/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
index f1ee8fe3f..d6ced6f36 100644
--- a/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
+++ b/src/libs/vtools/dialogs/tools/piece/dialogseamallowance.cpp
@@ -72,10 +72,7 @@ void EnableDefButton(QPushButton *defButton, const QString &formula)
 QString GetFormulaFromUser(QPlainTextEdit *textEdit)
 {
     SCASSERT(textEdit != nullptr)
-
-    QString formula = textEdit->toPlainText();
-    formula.replace("\n", " ");
-    return qApp->TrVars()->TryFormulaFromUser(formula, qApp->Settings()->GetOsSeparator());
+    return qApp->TrVars()->TryFormulaFromUser(textEdit->toPlainText(), qApp->Settings()->GetOsSeparator());
 }
 }
 
@@ -1515,7 +1512,6 @@ void DialogSeamAllowance::UpdateGrainlineValues()
         QString qsVal;
         try
         {
-            qsFormula.replace("\n", " ");
             qsFormula = qApp->TrVars()->FormulaFromUser(qsFormula, qApp->Settings()->GetOsSeparator());
             Calculator cal;
             qreal dVal = cal.EvalFormula(data->DataVariables(), qsFormula);
@@ -1597,7 +1593,7 @@ void DialogSeamAllowance::UpdateDetailLabelValues()
         QString qsVal;
         try
         {
-            qsFormula.replace("\n", " ");
+
             qsFormula = qApp->TrVars()->FormulaFromUser(qsFormula, qApp->Settings()->GetOsSeparator());
             Calculator cal;
             qreal dVal = cal.EvalFormula(data->DataVariables(), qsFormula);
@@ -1683,7 +1679,6 @@ void DialogSeamAllowance::UpdatePatternLabelValues()
         QString qsVal;
         try
         {
-            qsFormula.replace("\n", " ");
             qsFormula = qApp->TrVars()->FormulaFromUser(qsFormula, qApp->Settings()->GetOsSeparator());
             Calculator cal;
             qreal dVal = cal.EvalFormula(data->DataVariables(), qsFormula);
@@ -1814,7 +1809,6 @@ void DialogSeamAllowance::EditGrainlineFormula()
     if (dlg.exec() == QDialog::Accepted)
     {
         QString qsFormula = dlg.GetFormula();
-        qsFormula.replace("\n", " ");
 
         if (sender() == uiTabGrainline->pushButtonLen)
         {
@@ -1871,7 +1865,6 @@ void DialogSeamAllowance::EditDLFormula()
     if (dlg.exec() == QDialog::Accepted)
     {
         QString qsFormula = dlg.GetFormula();
-        qsFormula.replace("\n", " ");
         if (sender() == uiTabLabels->pushButtonDLHeight)
         {
             SetDLHeight(qsFormula);
@@ -1931,7 +1924,6 @@ void DialogSeamAllowance::EditPLFormula()
     if (dlg.exec() == QDialog::Accepted)
     {
         QString qsFormula = dlg.GetFormula();
-        qsFormula.replace("\n", " ");
         if (sender() == uiTabLabels->pushButtonPLHeight)
         {
             SetPLHeight(qsFormula);
@@ -2965,7 +2957,6 @@ void DialogSeamAllowance::InitAllPinComboboxes()
 QString DialogSeamAllowance::GetFormulaSAWidth() const
 {
     QString width = uiTabPaths->plainTextEditFormulaWidth->toPlainText();
-    width.replace("\n", " ");
     return qApp->TrVars()->TryFormulaFromUser(width, qApp->Settings()->GetOsSeparator());
 }
 
diff --git a/src/libs/vtools/visualization/visualization.cpp b/src/libs/vtools/visualization/visualization.cpp
index 020f2c7fa..657b13ce2 100644
--- a/src/libs/vtools/visualization/visualization.cpp
+++ b/src/libs/vtools/visualization/visualization.cpp
@@ -164,7 +164,6 @@ qreal Visualization::FindValFromUser(const QString &expression,
         {
             // Replace line return with spaces for calc if exist
             QString formula = expression;
-            formula.replace("\n", " ");
             if (fromUser)
             {
                 formula = qApp->TrVars()->FormulaFromUser(formula, qApp->Settings()->GetOsSeparator());