V cam doesn't work properly, don't understand

I am creating an animation in adobe flash cs5 and have the v cam ready to use. However when I put the v cam over something I wont to show a close up of and test movie, i can't see the close up instead I just see the animation with the v cam box infront of it which looks silly. I don't understand why it isn't working. I have a v cam file I have opened in another tab which shows a demonstration of it moving and when I test movie in that it zooms in, shows close ups etc. But when I copy it over to the animation I'm working on it will not work. We have several different v cam's that we have tried and everytime we test movie you can still see it. HELP!!