So you are storing text. OK, since I don't know your control names, the code would look something like this:
Code:
Private Sub cboTreatmentReceived_AfterUpdate()
If Me.cboTreatmentReceived = "No" Then '<<- change No to N/A ...not sure what you want here.
Me.cboCombo4 = "N/A"
Me.cboCombo5 = "N/A"
Me.cboCombo6 = "N/A"
End If
End Sub
Change the control names to your control names.
Could have
Code:
Private Sub cboTreatmentReceived_AfterUpdate()
If Me.cboTreatmentReceived = "No" or Me.cboTreatmentReceived = "N/A" Then
Me.cboCombo4 = "N/A"
Me.cboCombo5 = "N/A"
Me.cboCombo6 = "N/A"
End If
End Sub