Problem with Slider and Events.OnMouseUp

[aminef]

I am trying to have the value of the slider only when the mouse is release, this event is fired if I click and release the slider bar itself but not when I drag and release the slider cursor.

            Slider pageSlider = new Slider();
	    pageSlider.addListener(Events.OnMouseUp, new Listener<SliderEvent>() {

			@Override
			public void handleEvent(SliderEvent be) {
				//do stuff...
			}
		});

I am using google Chrome as a browser and gxt 2.2.0