Actionscript 需要代码使动画停止

正在尝试在as2的第109帧上停止此动画。任何我需要的帮助来阻止这一切。这是一部五彩纸屑动画

cnfNumber = 85;
var cnfs:Array = new Array("cnf", "cnf2", "cnf3","cnf4","cnf5") 
for (i=0; i<cnfNumber; i++) {
    newCnf = _root[cnfs[random(cnfs.length)]].duplicateMovieClip("snow"+i, i);
    newCnf._x = Math.random()*Stage.width;
    newCnf._y = -Math.random()*300;
    newCnf.maxCnfSpeed = Math.random()*4;
    newCnf.wind = Math.random()*6;
    newCnf._xscale = newCnf._yscale = newCnf.alpha = Math.random()*65+35
    newCnf.onEnterFrame = function() {
        this._rotation -= this.maxCnfSpeed+1;
        if(this._y>Stage.height || this._x>Stage.width || this._x<0){
            this._y = -Math.random()*300;
            this._x = Math.random()*Stage.width;
        } else {
            this._y += this.maxCnfSpeed+2;
            this._x += this.wind-4;
        }

        this._alpha = this.alpha;
    };
}

cnfNumber=85；
变量cnfs：数组=新数组（“cnf”、“cnf2”、“cnf3”、“cnf4”、“cnf5”）
对于（i=0；iStage.height | this.x>Stage.width | this.x为什么不这样做：

newCnf._xscale = newCnf._yscale = newCnf.alpha = Math.random()*65+35
newCnf.frameCount = 0;
newCnf.onEnterFrame = function() {
    if(this.frameCount<109) {
        this._rotation -= this.maxCnfSpeed+1;
        if(this._y>Stage.height || this._x>Stage.width || this._x<0){
            this._y = -Math.random()*300;
            this._x = Math.random()*Stage.width;
        } else {
            this._y += this.maxCnfSpeed+2;
            this._x += this.wind-4;
        }
        this._alpha = this.alpha;
        this.frameCount++;
    } else {
        this.onEnterFrame = null;
    }
};

newCnf.\u xscale=newCnf.\u yscale=newCnf.alpha=Math.random（）*65+35
newCnf.frameCount=0；
newCnf.onEnterFrame=函数（）{
如果（this.frameCountStage.height | | this.x>Stage.width | | this.x这是actionscript而不是javascript，对吗？是的，cnfs:Array是有效的actionscript。