>I'm reposting, as part of the message was missing for some reason...
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>What should the syntax be for a filter that is applied to a child cursor when the filter contains a reference to an object on the form?
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>I can get the filter to work by using SET FILTER TO plan_code = thisform.pgfpagerefresh1.page5.lstplantype.value, but I get an error when cancelling the form when the cusPushPopRecNo.Destroy method is run. The command IF !eval(filter(.icSaveAlias()) in this method errors with "Object is not contained in a form.". I have tried using SET FILTER TO _Screen.Activeform.Pgfpagerefresh1.Page5.LstPlanType.Value. The filter works, but I get a syntax error on the same line in the cusPushPopRecNo.destroy method.
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>It seems I need to somehow get the object reference of the form that I'm cancelling from in the filter command, but I can't seem to get the syntax right. Any ideas?
>

The problem is that the cursor exists independent of the form - for example, if you have a private datasession, and you pop a modal form that shares that datasession, if anything causes the cursor to reevalutred (ie moving the pointer), thisform will not resolve correctly.

If you want to use an object reference in a filter, you need to create a reference to the object that exists independently - maybe a property in a global object like your oApp, so that the reference can be evaluated even when the focus of the application shifts.