Agfdhyk

I have now come to the understanding that my Private sub calls my UDF because my UDF has Application.Volatile = True. I can therefore prevent it from happening, by setting it to Application.Volatile = False instead.

Problem

Without having Volatile set to True in my function, it won't update, which is key in my sheet. And as earlier mentioned, I would like my private sub to stop calling my function, since it pretty much stops my loop from happening.

Goal

I would therefore like to know, whether it is possible to prevent my Private sub from calling my function, since it is placed in very different areas.

My private sub inserts a new value in B19, whereas my function is placed in A2.

Thank you in advance

As requested here is the code:

Sub UpdateSheets()

Dim WS_count As Integer

Dim I As Integer

Dim sht As Worksheet



Today = Date



WS_count = ActiveWorkbook.Worksheets.Count



For I = 1 To WS_count

    If I = 1 Then

        Else

        Set sht = Sheets(I)

            LnLAddress = sht.Range("A:A").Find("Lease end lessee:", , LookIn:=xlValues).Address(False, False, xlA1)

            LnLOff = sht.Range(LnLAddress).Offset(0, 1).Address(False, False, xlA1)

            LnLVal = sht.Range(LnLOff).Value

            NtceAddress = sht.Range("A:A").Find("Notice:", , LookIn:=xlValues).Address(False, False, xlA1)

            NtceOff = sht.Range(NtceAddress).Offset(0, 1).Address(False, False, xlA1)

            NtceVal = sht.Range(NtceOff).Value

            On Error GoTo Ending:

            NtceVal = Left(NtceVal, Application.WorksheetFunction.Find(" ", NtceVal) - 1)

            LnLVal = DateSerial(Year(LnLVal), Month(LnLVal) - NtceVal, Day(LnLVal))

            LnLYear = Year(LnLVal)

            On Error GoTo 0

                If LnLVal <= Today Then

                    AutoExtAddress = sht.Range("A:A").Find("Automatical extension of contract", , LookIn:=xlValues).Address(False, False, xlA1)

                    AutoExtOff = sht.Range(AutoExtAddress).Offset(0, 1).Address(False, False, xlA1)

                    AutoExtVal = sht.Range(AutoExtOff).Value

                    AutoExt = Left(AutoExtVal, Application.WorksheetFunction.Find(" ", AutoExtVal) - 1)

                    LnLNewVal = DateSerial(Year(LnLVal) + AutoExt, Month(LnLVal) + NtceVal, Day(LnLVal))

                    Application.Calculation = xlCalculationManual

                    sht.Range(LnLOff).Value = LnLNewVal

                    Application.Calculation = xlCalculationAutomatic 'loop through functions starts here...

                End If

    End If

Ending:

On Error GoTo 0

Next I



End Sub

And here the functions:

Function SHEETNAME(number As Long) As String

Application.Volatile True

    SHEETNAME = Sheets(number).Name

End Function



Function NxtShtNm(number As Long) As String

Application.Volatile True

    NxtShtNm = ActiveWorkbook.Sheets(ActiveSheet.Index + number - 1).Name

End Function

later on came to know a better solution, without making UDF's...
I deleted my functions, since they only made problems within my sheet.

Then I made a named range, from the name manager, calling it "sheetlist"

After this I assigned this formula to what it refers to: =REPLACE(GET.WORKBOOK(1);1;FIND("]";GET.WORKBOOK(1));"")&T(NOW())

Making a formula in the cells, where I need to reference the workbooks: =IFERROR(HYPERLINK("#'" & INDEX(sheetlist;ROW()) & "'!A1";INDEX(sheetlist;ROW()));"")

Now it references the sheets in order, and assigning:
Private Sub WorkSheet_Activate()
ActiveWorksheet.Calculate
End sub

to the overview sheet, has made the trick of updating itself :)