text box blocking interactive plane

hi all. i have a strange one here. I have MovieMaterial for a plane. The plane is receiving mouse events just fine using the InteractiveScene3DEvent. However, in that moviematerial's movieclip, i also have a text field. This textfield seems to interrupt the plane's ability to receive events. In other words, the user can click any part of the plane, so long as they don't click the textfield from that moviematerial. It's as if the textfield is literally a level higher and thus the mouseevent never gets to the plane because it's being 'blocked'.  Any ideas on how i can get that textfield to stop being a problem?