Error Trapping on a subform

[Leventcos21]

I am stuck on the syntax of error trapping a subform. Basically, I have form with a subform and if this subform and on the main form I have a check box that will lock all the records and check to see ISNULL on both forms. The main form is working fine.

How do I syntax the subform
Thank you

Private Sub LockEdit_Click()
If.................
LockEdit.Value = False
ElseIf IsNull([Forms]![sfrmProcessOwner]![cboProcessOwner]) Then
MsgBox "Process Owner Field is empty, Please Select"
LockEdit.Value = False
Else
...................
End If
End If

 

[Leventcos21]

never mind I figured right after I posted it

ElseIf IsNull([sfrmProcessOwner].Form![cboProcessOwner]) Then

....