>I use set relation sometimes and have found that when I move the parent table I need to Select the child table just to wake it up to show what it is supposed to do. You might try that. When you move in the first list box then select the child table and refresh the second list box programmatically.

If that was the problem then I would expect the second listbox to wake up when you click on it.... but I will give it a try.

I am already doing a 2nd listbox.requery and .refresh

Thanks