Access of undefined property error?

programming flash
1

I’m sure this is just a rookie mistake, but I’m getting the following error:

1119: Access of possibly undefined property scaleX through a reference with static type Function.

from the following code:
public function zoomCounty():void
{
{
var countyTweenZoomX:Tween = new Tween(selectedCounty, “scaleX”, Regular.easeInOut, selectedCounty.scaleX , (selectedCounty.scaleX +countyEndSize), framesForZoomIn, false);
var countyTweenZoomY:Tween = new Tween(selectedCounty, “scaleY”, Regular.easeInOut, selectedCounty.scaleY , (selectedCounty.scaleY +countyEndSize), framesForZoomIn, false);
var countyTweenPositionX:Tween = new Tween(selectedCounty, “x”, Regular.easeInOut, selectedCounty.x , countyEndPositionX, framesForZoomIn, false);
var countyTweenPositionY:Tween = new Tween(selectedCounty, “y”, Regular.easeInOut, selectedCounty.y , countyEndPositionY, framesForZoomIn, false);

        }