Targeting a nested MC

1

I am creating a drop down menu and having problems adding problems to the nested MCs. I have all the actions on the root timeline and I have a one Main_MC which holds several Sub_MC’s. I have the Main MC animated fine but I can’t find how to control the Sub-MC’s.

Here is a sample of my code and I have tried _root. and this. and show below but I can’t get it to work!

//main MC
Main_MC.onRollOver = over;
Main_MC.onRollOut = out;
function over() {
this.gotoAndPlay(2);
}
function out() {
this.gotoAndPlay(16);
}
//sub mc
Main_MC.sub_Mc.onRollOver = overtwo;
Main_MC.sub_Mc.onRollOut = outtwo;
Main_MC.sub_Mc.onRelease = function() {
gotoAndPlay(“futureFrame”);
};
function overtwo() {
this.Main_MC.Sub_Mc.gotoAndPlay(2);
}