How to wait for a movieclip to stop the animation in order to do other actions in AS3

the thin开发者_开发百科k is; in the main timeline im on the frame 1 (animation stoped here), i want to pass to frame 2 but first i play a MC, who is an animation of a black square who covers all the movie that goes from transparent on his own frame 1 going to full opacity in frame 5 and then transparent again in frame 9. Well i want to pass from main frame 1 to frame 2 when the MC animation is exactly on his own frame 5. Im developing in AS3, any ideas? Thanks!

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In the frame 5 of your Movie clip, place a AS to tell root timeline goto nextframe.

this['root'].gotoAndPlay(2);