Lock a check box if another check box isn't ticked

[philtr]

Very new to MS Access so go easy

I've got two check boxes, one called Completed and the other called Infill, i'd like the Infill box to be locked or unabled unless the Completed box is ticked. Any method of doing this?

 

[missinglinq]

In the Properties sheet set InFill.Locked to Yes.

Then, in code:

Private Sub Completed_AfterUpdate()
  If Completed Then
    InFill.Locked = False
  Else
    InFill.Locked = True
  End If
End Sub

Private Sub Form_Current()
 If Completed Then
    InFill.Locked = False
  Else
    InFill.Locked = True
  End If
End Sub