@Command
 @NotifyChange({"mdeData", "firstMarkersvm", "secondMarkersvm"})
 public void mapDropEvent(@ContextParam(ContextType.BIND_CONTEXT) BindContext ctx) {
   MapDropEvent event = (MapDropEvent) ctx.getTriggerEvent();
   _mapsvm.setMdeData(event);
   if (event.getDragged() instanceof Gmarker) {
     GmarkersVM vm = _markersvmMap.get(((Gmarker) event.getDragged()).getId());
     vm.setLat(event.getLat());
     vm.setLng(event.getLng());
   }
 }