Tweening Alpha on MovieClip

programming flash
1

I’m having trouble with fading an object. I have the following code
which takes a county and shrinks it back and I’d like it’s alpha to
be at 100% until the last minute, then go to 0 when it lands. Right
now it does a slow fade.
Any ideas?

function makeCountySmall():void
{

        this.alpha = 1;
        
        var countyTweenZoomX:Tween = new Tween(this, "scaleX", Regular.easeInOut, this.scaleX , 3.0177, speed, false);
        countyTweenZoomX = new Tween(this, "scaleY", Regular.easeInOut, this.scaleY , 3.0177, speed, false);
        countyTweenZoomX = new Tween(this, "x", Regular.easeInOut, finalXPosition , startingXPosition, speed, false);
        countyTweenZoomX = new Tween(this, "y", Regular.easeInOut, finalYPosition , startingYPosition, speed, false);
        var couuntyTweenAlpha = new Tween(this, "alpha", Strong.easeOut, 1, 0, 10, false);

        countyBig = false;
        aCountyIsBig = false;
        
    }