Sorry if im asking this question... Im still little confused.. if this is a variable where is the declaration of it and the boolean value of it at first.. I mean where did it get its first value (whether true or false) to validate the if statement.. thanks hope you can help me understand this...btw this is my problem, i have a flash project which troubling me on nested rollOver.. This is the scenario. I have put a onRollOut button state a movieclip.. which under that movieclip i have a invisible button named (btnInvi) which triggers the a movieclip to play everytime you rollover on that invisible button... Actually this whole thing is some kind of drop down menu.. Now the problem is it is not detecting the rollover state as the problem here also.. but the difference is im using invisible button to trigger the movieclip to play which is below a movieclip which has onRollout state.. can u advise me.