如何修改现有的AS3事件以便我可以传递数据？

class CustomEvent extends Event {
    public var data:Object;

    public function CustomEvent(type:String, data:Object, bubbles:Boolean = false, cancelable:Boolean = false) {
        super(type, bubbles, cancelable);
        this.data = data;
    }

    public override function clone():Event {
        return new CustomEvent(type, data, bubbles, cancelable);
    }
}

addEventListener(CustomEvent.MY_EVENT, onCustomEvent);

var customEvent:CustomEvent = new CustomEvent(CustomEvent.MY_EVENT, {name: "John", age: 30});
dispatchEvent(customEvent);

private function onCustomEvent(event:CustomEvent):void {
    trace("Name: " + event.data.name);
    trace("Age: " + event.data.age);
}