Excel VBA: how to rewrite my long FormulaArray code with .replace

Question

How to rewrite my long .FormulaArray using .Replace . Please help me

Private Sub CommandButton2_Click()
Dim x As Variant
Dim y As Variant

Workbooks.Open (TextBox3.Text)

x = Split(TextBox2.Value, Application.PathSeparator)
y = Split(TextBox3.Value, Application.PathSeparator)

Workbooks(x(UBound(x))).Sheets("KomponentenohneDuplikate").Activate

Workbooks(x(UBound(x))).Sheets("KomponentenohneDuplikate").Range("z5").FormulaArray = "=iferror(INDEX('[" & y(UBound(y)) & "]Regelung&Partno'!C1:C10,MATCH(1,('[" & y(UBound(y)) & "]Regelung&Partno'!C5=RC[-25])*('[" & y(UBound(y)) & "]Regelung&Partno'!C9=""Diverse""),0),10),""-"")"
With Workbooks(x(UBound(x))).Sheets("KomponentenohneDuplikate").Range("y5:y3263")
.FillDown
.Value = .Value
End With

I tried following code. result showing only as Part2 . the program not replace formula in Part2 and Part3 . Dim FormulaPart1 As String Dim FormulaPart2 As String Dim FormulaPart3 As String Dim origRS As Long

origRS = Application.ReferenceStyle
Application.ReferenceStyle = xlR1C1

FormulaPart1 = "=IFerror(""Part2"",""-"")"
FormulaPart2 = "INDEX('[" & y(UBound(y)) & "]Regelung&Partno'!C1:C10,""Part3"",0),10)"
FormulaPart3 = "MATCH(1,('[" & y(UBound(y)) & "]Regelung&Partno'!C5=RC[-25])*('[" & y(UBound(y)) & "]Regelung&Partno'!C9=""Diverse"")"

With Workbooks(x(UBound(x))).Worksheets("KomponentenohneDuplikate").Range("z5")

.FormulaArray = FormulaPart1
.Replace what:="""Part2""", replacement:=FormulaPart2, lookat:=xlPart
.Replace what:="""Part3""", replacement:=FormulaPart3, lookat:=xlPart

End With
Application.ReferenceStyle = origRS

Please help me how to solve this.

Answer 1

Here is correct formula using .Replace funcation,

Dim FormulaPart1 As String
Dim FormulaPart2 As String
Dim FormulaPart3 As String
Dim origRS As Long

origRS = Application.ReferenceStyle
Application.ReferenceStyle = xlR1C1

FormulaPart1 = "=IFERROR(""Part2"",""-"")"
FormulaPart2 = "INDEX('[" & y(UBound(y)) & "]Regelung&Partno'!C1:C10,""Part3"",10)"
FormulaPart3 = "MATCH(1,('[" & y(UBound(y)) & "]Regelung&Partno'!C5=RC[-25])*('[" & y(UBound(y)) & "]Regelung&Partno'!C9=""Diverse""),0)"

With     Workbooks(x(UBound(x))).Worksheets("KomponentenohneDuplikate").Range("z5")

.FormulaArray = FormulaPart1
.Replace what:="""Part2""", replacement:=FormulaPart2, lookat:=xlPart
.Replace what:="""Part3""", replacement:=FormulaPart3, lookat:=xlPart

End With
Application.ReferenceStyle = origRS