AS3：removeChild

Question

所以我终于让菜单工作了，但是当你回到菜单时我想删除当前的剪辑。我认为这会起作用，不幸的是它没有。有关如何使其工作的任何想法？我顺便使用OOP，这是我的课程之一。

import flash.display.MovieClip;
import flash.events.Event;
import flash.events.MouseEvent;

public class MainClip extends MovieClip {

    var currentClip:MovieClip;

    public static const MY_FINISHED_MAINGAME_EVENT:String = "my_finished_mainGame_event"

    //constructor code
    public function MainClip() {
        backToMenu.addEventListener(MouseEvent.CLICK, openMainMenu);
    }

    function removeCurrent () {
        currentClip = new MainClip;
        removeChild(currentClip);
    }

    //terug naar het Menu
    public function openMainMenu (event:MouseEvent):void
    {
        dispatchEvent(new Event(MY_FINISHED_MAINGAME_EVENT));
        currentClip = new IntroClip();
        addChild(currentClip);
        currentClip.x=200;
        currentClip.y=200;
    }
}