         {
             setValue(newValue); 
             dispatchEvent(new TrackBaseEvent(TrackBaseEvent.THUMB_DRAG));
-            dispatchEvent(new Event(Event.CHANGE));   
         }
     
         event.updateAfterEvent();

            system_mouseUpHandler);
        
        dispatchEvent(new TrackBaseEvent(TrackBaseEvent.THUMB_RELEASE));
    }

    //---------------------------------

    protected function pointToValue(x:Number, y:Number):Number
    {
        return minimum;
    }

    /**
