Sorry just read the bit which stated do a private sub routine on the form.
On form POL_Actions_Enter I clicked on properties of combo box Reason_For_Withdrawal
I then selected Events and before updates line. in there I typed the following.
Private Sub POL_Actions_Enter()
If IsNull(Me![Change_Withdrawn])
Me![Reason_for_Withdrawal].Visible = False
Else
Me![Reason_for_Withdrawal].Visible = True
End If
End Sub
I assumed if change withdrawn is null then reason for withdrawal isnt visible?
For some reason the code wont step forward, but I am not knowledgable enough to understand why. Also not sure if this is the cause, but my whole sub form has vanished from my main form. LOL what do they say, "If it ain't broke, fiddle with it!"
Thanks in advance.