Actionscript 3 当鼠标点击舞台时，屏幕上会出现AS3对象

我想在actionscript中将我库中的一个对象放在我单击的舞台上。看起来容易吗？对吗？完全空白。任何帮助都会很棒：） 到目前为止，我的代码是：

package code {

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

public class Main extends MovieClip {

    public var redBox: Box = new Box(mouseX, mouseY);

    public function Main() {
        // constructor code
        stage.addEventListener(MouseEvent.CLICK, mouseClickEvent);
    }
    public function mouseClickEvent(e:MouseEvent):void {
        addChild(redBox);
    }
}

}

这是主要的，然后方框代码是：

package code {

import flash.display.MovieClip;

public class Box extends MovieClip{

    public function Box(myX:Number, myY:Number) {
        // constructor code
        myX = x;
        myY = y;
    }

}

}

只要这样做：

package code {

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

public class Main extends MovieClip {

    public var redBox: Box = new Box();

    public function Main() {
        // constructor code
        stage.addEventListener(MouseEvent.CLICK, mouseClickEvent);
    }
    public function mouseClickEvent(e:MouseEvent):void {
        redBox.x = stage.mouseX;
        redBox.y = stage.mouseY;
        addChild(redBox);

    }
}

}