I have a user input form which opens in in dialog mode in the AfterUpdate
event of a control.  The user's selection sets the value of an option field
and the form's visible property to false.  When the code resumes to evaluate
the response, I'm getting the error "Microsoft Access can't find the field
'YesOption' referred to in your expression".  The option is being set as well
as the visible property.  Why is Access not recognizing it?
Calling Code:
DoCmd.OpenForm "frmUpdateDeliveryInformation", acNormal, , , , acDialog

If fIsLoaded("frmUpdateDeliveryInformation") = True Then
       If [Forms]![frmUpdateDeliveryInformation]![YesOption ] = True Then
           'Action to take
       End If
       DoCmd.Close acForm, "frmUpdateDeliveryInformation"
   Else
       ' if the form is not open, then user hit the "x", or the cancel
       ' button on the frmGetComboName form. Note that the cancel button on
       ' this form simply does a docmd.close
       MsgBox "user canceled"
   End If

Input Form Code:
Private Sub cmdYes_Click()
On Error GoTo Err_cmdYes_Click
   
   Me.YesOption = True
   Me.Visible = False

Exit_cmdYes_Click:
   Exit Sub

Err_cmdYes_Click:
   MsgBox Err.Description
   Resume Exit_cmdYes_Click
   
End Sub
Private Sub cmdNo_Click()
On Error GoTo Err_cmdNo_Click
   
   Me.YesOption = False
   Me.Visible = False

Exit_cmdNo_Click:
   Exit Sub

Err_cmdNo_Click:
   MsgBox Err.Description
   Resume Exit_cmdNo_Click
   
End Sub
Thanks!
Walter