Movieclip visible = false doesn't work

Hello

I have a problem with the movieclips visible = false. I have one movieclip named: mcquestion.
I’ve put the another movieclips (mc_div) inside that mcquestion movieclip. I don’t know whether i can do like that or not because I am only the beginner to flash :).
And the problem I have is I want to set the visible properties of the inner movieclip of mcquestion, mc_div, to false in some condition.
Here is the code line that i’ve tried and it doesn’t work.
Please advice me how should i do that. :slight_smile:

_root.mcquestion.mc_div.visible= false;

Please kindly help me with my problem.
Waiting for yr reply.

Regards,
Win.