Bubbles Floating Upward?

[flashgurl90]

Hey, i love this bit of AS its exactly what im looking for. im trying to use this code with 1 my image of bubbles, but i only want it to play for 50 frames of the scene, and currently it plays through the whole movie. Do you know how can i stop it from playing at a certain point? and how do i constrain it to a certain area? Many thanks

[marvincat]

This is great! I'm also trying to restrain it to a certain area. Any ideas?
Also, how ca I import it into another fla? I tried everything but it just doesn't work.
Thanks!!!