Targeting movie clips on release?

i have posted this problem a few times but there has been not much activity.
within the fla. there is a button that attaches itself to the mouse onrollover.

in the bottom of the file are two movieclips. the + looking one has a clipevent. to load _target.
the moving button has a _target. function to play the movie.
what i am trying to achieve is on release of the button, the movieclip will play. and if this is also repeated on the other movieclip.(circle at bottom)
it will also play.
(i have only put the target play command on the +)

also:
i am trying, with no success to have more than one moving buttons. but it just bugout. only one can be moved onrollover.

if anybody has encountered this issue before would be great have some help:

thanks brndn