@Override
 public void initPresentation() {
   IOverviewCategory category = view.addOverviewCategory(getString("Overview.Experience.Title"));
   for (IValueModel<Integer> model : management.getAllModels()) {
     IValueView<Integer> valueView =
         category.addIntegerValueView(getString("Overview.Experience." + model.getId()), 2);
     presenters.add(new ValueSubPresenter(model, valueView));
   }
   initTotal(category);
   calculateXPCost();
 }
 public void update() {
   view.setValue(model.getValue());
 }