Child doesn't see his parent

Hi,
I don't know if I am confusing something.
I have the base class main.as. From there I do
addChild(child);
First thing the child does is
trace ("Parent: " + MovieClip(parent));
and it always gives me null. How can this be? It actually works to launch public functions via MovieClip(parent).function(); but I can't access other public variables. For example I have a public Boolean variable. And I need to check it from the child. If I do
trace("Boolean: " + MovieClip(parent).b_boolean) it simply shows me TypeError: Error #1009: Cannot access a property or method of a null object reference. How can this be? There must be a way to check a parent's public variable, right? I don't understand.
Please, if anyone knows what is going on, explain.
Greatings,
GDdept

yes, you should use the addedtostage event. in your child class:
//in the constructor:
this.addEventListener(Event.ADDED_TO_STAGE,init);
//outside the constructor:
private function init(e:Event):void{
trace(this.parent,this.stage,this.root);
p.s. please mark helpful/correct responses.

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