Pam,
Do you mean add say 7 to cell A1 when A1 already contains say 3, giving a
result of 10?
If so, you need VBA. For instance, this code will add the value of A1 to
whatever is in A1 already.
Dim A1Val
Private Sub Worksheet_Change(ByVal Target As Range)
Application.EnableEvents = False
On Error GoTo ws_exit
If Target.Address = "$A$1" Then
Target.Value = A1Val + Target.Value
End If
ws_exit:
Application.EnableEvents = True
End Sub
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
If Target.Address = "$A$1" Then
A1Val = Target.Value
End If
End Sub
It's worksheet code, so it goes into the worksheet code module.
--
HTH
Bob Phillips
... looking out across Poole Harbour to the Purbecks
(remove nothere from the email address if mailing direct)