package {
  import flash.display.Sprite;
  import flash.events.Event;
  import flash.text.TextField;
  public class MyEventDispatcher extends Sprite {
    public function MyEventDispatcher() {
      addEventListener("OPEN222", handleOpenEvent);
      dispatchEvent(new Event("OPEN222"));
    }
    private function handleOpenEvent(event:Event) {
      txt.text = "OPEN";
    }
  }
}