Thank You
I have subform and form (Master form)
The Master Form Contain Check box name checkbox1
the subform is (data sheet) and allow addition = true
In the subform before insert event I try all the next code but not work
correct I want prevent user from data entery until check box = true or
checked
why all of this code not work???
====================
(1)
If Parent.checkbox1.Value = False  Then
Cancel = True
Else
'
End If
============
(2)
If Parent.checkbox1.Value = 0 Then
Cancel = True
Else
'
End If
===================
(3)
If Me.Parent.checkbox1.Value = 0 Then
Cancel = True
Else
'
End If
========================
Why all this code not work correctly