Drag movieclip - seekbar

Fik det til at virke men nu mangler jeg bare at handleren følger med når movieclippet kører, nogen der kan hjælpe med det?

Koden ser sådan her ud

this.onEnterFrame = null;
this.onPress = onPressHandler;
this.onRelease = this.onReleaseOutside = onReleaseHandler;

var boundry_mc:MovieClip = bar;
var lowerBound:Number = boundry_mc._x;
var upperBound:Number = boundry_mc._width + boundry_mc._x - handle._width;
var target_mc:MovieClip = _root.sequence;

function onPressHandler():Void{
    this.onEnterFrame = onEnterFrameDown;
}

function onReleaseHandler():Void{
    this.onEnterFrame = null;
}

function onEnterFrameDown():Void {
    dragWithin();
    scrubMovie(target_mc);
}

function dragWithin():Void{
    var xmousePosition = this._xmouse;
    if (xmousePosition > lowerBound && xmousePosition < upperBound){
        handle._x = xmousePosition;
    } else if (xmousePosition < lowerBound){
        handle._x = lowerBound;
    } else if (xmousePosition > upperBound){
        handle._x = upperBound;
    }
}

function scrubMovie(f_target_mc:MovieClip):Void{
    var totalFrames:Number = f_target_mc._totalframes;
    var newFrame:Number = Math.ceil(totalFrames * handle._x / (upperBound - lowerBound));
    f_target_mc.gotoAndStop(newFrame);
}

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