如何在ActionScript中正确移动和缩放？

function scale(e:Event):void{
    plane1_mc.scaleX += .1;
    plane1_mc.scaleY += .1;
    plane1_mc.x -= 5;
    plane1_mc.y -= 3;
}

function prop(evt:Event):void{
    plane1_mc.prop_mc.rotation += 100;
}

plane1_mc.prop_mc.addEventListener(Event.ENTER_FRAME, prop);
plane1_mc.addEventListener(Event.ENTER_FRAME, scale);
function scale(e:Event):void{
    plane1_mc.sca