[qazwsx]

import mx.events.EventDispatcher;
 
var dispatcher:EventDispatcher  = new EventDispatcher();
 
dispatcher.addEventListener('40', pressDown);
 
function pressDown():Void
{
	trace('ooooooooooooooo');
}
 
Key.addListener(this);
this.onKeyDown = function():Void
{
	var e:Object = {};
	e.type = Key.getCode()
	dispatcher.dispatchEvent(e);
}

Я думал это очевидно