Drag and drop alignment problem! AS 2. Flash 8

Hello everyone! … i have problems with my flash project…
I’m doing on drag and drop flash game…
Thre’s red & blue movieclips… juz wanna divide them nicely to their respective category

but then … i don’t know why … they are align horizontally on the x axis… and not detecting my line as a boundary…

Tried using hittest to do it… but still can’t solve it…

I’ve attach my flash file… SOrry for any messy codings >.< Been experimenting it at every areas…

Thanks alots for the guidance =) ~