MovieClip Class to Load its Symbol to Stage

programming flash
1

Hello everybody

This is my first post in this forum. I am struggling with one issue as below:

In order to make it very simple, I have simplified the code as below:

 
Test_btn.addEventListener(MouseEvent.CLICK, TestHandler);
function TestHandler(e:MouseEvent):void
{
   var mc: myMC = new myMC();
}

/////////// Class definition ///////////

 
package 
{
 import flash.display.*;
 import flash.events.*;
 public class myMC extends MovieClip 
 {
      public function myMC() 
  {
      [COLOR=red]parent.addChild(this);     // reports error.[/COLOR]
  }
  }
 }
}

In this case, parent= NULL error shows up.

My requirement is just to load the MC on to the stage. Please help.