attachmovie and radio component

[joaoVieira]

Hi,

I'm triyng something i thougth would be straight forward but...

I want to control the selected state of a radio button, which is inside a movieclip dynamicaly created, through actionscript.

The code:

empty_mc.attachMovie("radio_mc","radio_mc",10); //attach the movie to the target MC
trace(empty_mc.radio_mc.sim_rdb); //check if it exists
empty_mc.radio_mc.sim_rdb.selected = true; //trying to get it to true ### DOESN'T WORK ### 

Not much more in it, but attached file is here for anyone who wants to help me

Thanks in advance,
Joao