code: private void updateOmissionCategories(String[] cat) {
          short itens = this.omissionsCategoriesDropbox.getItemCount();
          if(itens > 0) {
              this.omissionsCategoriesDropbox.removeItems((short)0, itens);
          }
          this.omissionsCategoriesDropbox.addItem(I18nLabelsLoader.ADDON_OMISSION_CATEGORY_CUSTOM, (short)0);
          this.omissionsCategoriesDropbox.addItem(I18nLabelsLoader.ADDON_OMISSION_CATEGORY_UNKNOWN, (short)1);
          this.omissionsCategoriesDropbox.addItems(cat, (short)2);
  
      }
docs: **************************************************************************