Opaque Background doesn't support _alpha

hi

I have created one application in flash where i want to set transparancy for whole application. I am using slider for the same. Using _root._alpha i am doing that. It is wokring fine.

But now i have use opaqueBackground propert for one of the movieclip inside my application. Now if i set _alpha for _root it is not working for that perticular movieclip.

what can i do n this case?
please help !

  • Thanks
    smita.