The following code locks data onto column IV. So whenever a column elsewhere
is deleted the data will not shift to IU.



Private Sub Worksheet_Change(ByVal Target As Range)
Const fixed_name = "lock_formula"
Const refer_str = "=Sheet1!$IV$1:$IV$800"
Dim rng As Range
Dim save_formula

If IsError(Evaluate(fixed_name)) Then
ActiveWorkbook.Names.Add Name:=CStr(fixed_name),
RefersTo:=CStr(refer_str)
Else
If CStr(ActiveWorkbook.Names(CStr(fixed_name)).Refers To) <
CStr(refer_str) Then
On Error GoTo CleanUp
Application.EnableEvents = False
Set rng = Evaluate(fixed_name)
save_formula = rng.Formula
rng.Value = ""
Set rng = Range(CStr(refer_str))
rng.Formula = save_formula
ActiveWorkbook.Names(CStr(fixed_name)).RefersTo =
CStr(refer_str)
Else
'do nothing
End If
End If

CleanUp:
Application.EnableEvents = True
End Sub


What if I want to add a column somewhere on the sheet?

I could first delete an unused column somewhere on the sheet, but because
the code behind the sheet is to prevent the shift of data to field IU I am
therefore unable to add a new column/field.

How can I retain the code but also allow the addition of a new column/field?

Thanks if you are able to help.
Pat