Detecting child of movieclip

Hi,

I have a parent (container) movieclip, which has under it a series of child movieclips (gameboard squares).

I have set up a series of movieclips “tiles” outside of the parent, which will be drop&drop onto the parent.

if I dont have the container mc and just add the child mcs directly to the stage. I can drag and drop the tiles onto the gameboard squares, and it detects the gameboard squares as the droptarget.

when i put them in the container. the droptarget becomes the container, not the child of the container.

So I am wondering if there is a way to ignore the container, when its detecting the droptarget, so that it will still detect the drop target as being the game board squares, rather than its parent container?

Thanks for any help you can give me.