If blank field

[SOS]

The code needs to be changed to this:

Private Sub Check72_AfterUpdate()
  If Not IsNull(Me.Check72) And IsNull(Me.[King Charge]) Then
        Me.[King Charge] = 55
  End If
End Sub

And here's the attachment.

Remember when we ask for names for the code it is USUALLY the CONTROL names we want NOT the field names.

 

[Jakeman]

It works just fine ... Thank You ... THANK YOU ...
O! Did I say Thank You So Much.

 

[SOS]

Glad we finally got it figured out. Good luck with the rest of it.