Access to MovieClip from root

1 
var Root:MovieClip
var container=MovieClip;

function menuPress() {
    trace("trace");
}

function doIT(parameters,WIDTH,HEIGHT) {

        container=MovieClip(parent.parent.parent);
        trace(container.name)//HELP
        Root=MovieClip(parent.parent.parent.parent);
        trace(Root)//[object MainTimeline]
        trace(Root.name)//root1
        //container.getChildByName("help").getChildByName("help").content.menuPress();//1*) it works
        
        Root.getChildByName("HELP").getChildByName("help").getChildByName("help").content.menuPress();
        //2*) 
        // it doesn't work
        //1061: Call to a possibly undefined method getChildByName through a reference with static type flash.display:DisplayObject.

}
}

why 1* works but 2* only one level higher (root) doesn’t work

the error start immidiately when I test current swf not main movie which load this swf

sorry for my english :slight_smile: