Gah. I feel like an idiot. The form creator hadn't saved the form as dynamic. My bad. Thanks!

Thanks for the quick reply. I did try the fully qualified names, and it's still not working. Here's a visual example. The subforms display under the dropdown, based on the dropdown selection.

I created a simple form that uses javascript to hide or display subforms based on the selection from a drop down menu. Everything was working fine. When I integrated the dropdown and subforms into an existing form, the subforms no longer display on DropDownList1::change. The code looks like: form1.s...