Event listener for startdrag

whats the best method to set an event listener and broadcaster for a startdrag event??

dragger.onPress = function(){
startDrag(dragger, true, 29.0, 155.0, 280, 155.0);
}
something like


draggerlistener = new addEventListener();
 
 
draggerlistener.addEventListener(dragger._x.move, dragger._x);

but im sure this is wrong