     [Inspectable(category="General", defaultValue="NaN")]
 
     /**
-     * The ending scale factor in the y direction.
+     *  The ending scale factor in the y direction.
+     *  A scale value of 0.0 is invalid.
      *
      *  @langversion 3.0
      *  @playerversion Flash 10


    /**
     *  The starting scale factor in the y direction.
     *
     *  @langversion 3.0
     *  @playerversion Flash 10

 *  in the x and y directions around the transform center.
 *  A scale of 2.0 means the object has been magnified by a factor of 2, 
 *  and a scale of 0.5 means the object has been reduced by a factor of 2.
 *  A scale value of 0.0 is invalid.
 * 
 *  <p>Like all AnimateTransform-based effects, this effect will only work on subclasses
 *  of UIComponent and GraphicElement, as these effects depend on specific
