Combo box requery issue in tabbed form mode

[michael0610]

I have an application where I have developed a tabbed user input form with several tab pages to populate several tables with data using the master/child linking philosophy. There is one subform in particular that has two combo box fields that are related. I have them both set up to display value choices based on an undelying query. I want to restrict the scond box's choices based on the choice made in the first box and have written the following code to be applied after the first combo box is updated.

Private Sub RteGroup_AfterUpdate()
Form_Routing.OpType = Null
Form_Routing.OpType.Requery


Form_Routing.OpType = Form_Routing.OpType.ItemData(0)
End Sub

This effectively limits my second combo box choices based on the selection of the first box. Her's my problem though. It works fine if I run the subform individually but if I run it as part of the master form in tabbed mode I get an "Enter paramter value" dialog box asking for the value of the first combo box. it appears the requery is not functioning under the tabbed mode. can anyone help with this? Thanks!

[pbaldy]

The reference to the first combo in the query would have to be adjusted to the syntax for a subform:

Forms Refer to Form and Subform properties and controls

[michael0610]

Thanks for the info. Here's what I tried based no the link you sent:

Me!OpType = Null
Me!OpType.Requery
Me!OpType = Forms!Routing.OpType.ItemData(0)

This is coded to the afterupdate event for the first combo box control on the subform. I still get the parameter prompt. Obviously I have a syntax issue of some sort but don't know what I need to change.

[pbaldy]

What is the row source of OpType? I suspect that's where the form reference is.

[michael0610]

The row source for 'OpType' is referencing a query against another table to give it its choices. I am using a where statement in this query to restrict the 'OpType' choices to ones where a field named 'Opercode' = [Forms![Routing]![Rtegroup] and is typed exactly like this.

[pbaldy]

That's where I thought it was, and that form reference has to be changed when the form is a subform, as detailed in the link.

[michael0610]

That is definitely the issue. When I go into the query and run it within the master/subform it prompts me for the parameter but not when I open the subform independently and run the query. I jsut have nto figured out the proper syntax to change the paramter to so that it functions properly while running in master/subform mode. I tried everything that looked reasonable baseed off the link you sent but nothing works.

[pbaldy]

This is the one you're after:

Forms!Mainform!Subform1.Form!ControlName

[michael0610]

That did it! Thank you so much for your help with this!

[pbaldy]

No problemo!