Hallo,
I have made the next macro, but when I want to run it I get an error
message: "Run-time error 13: Type mimatch". Can anybody please tell me what
I'm doing wrong.

Sub Abs_Bkg()

Dim rng As Range
Dim lRownum As Long
Dim i As Long
Dim j As Long
Dim exSh As Worksheet
Dim wks As Worksheet
Set exSh = Worksheets("raw data from spad it")
Set wks = Worksheets("Calculated Data")

With exSh.UsedRange
lRownum = .Cells(.Rows.Count, 1).Row
End With
With wks
For j = 1 To 4
Set rng = Range("O2:O" & lRownum)
For i = 2 To lRownum
wks.Cells(i, rng.Offset(V, j)).Value = exSh.Cells(i, rng.Offset(O,
j)).Value - _
wks.Cells(rng.Offset("AL4", j)).Value
Next i
j = j + 1
Next
End With

End Sub

What this macro has to do is to substract AL4 (worksheet "wks") from O2
(worksheet "exSh") and put the solution in V2 ("wks"). And then go to the
next row but keep "AL4" absolute. Do the same calculation till the lastrow.
Then go to the next column, now is AL4 variable. So; P2 - AM4 = W2. When
going to the next row AM4 stays AM4.

Thanks,
-Metin-