cm.addHeaderGroup(0, 2, new HeaderGroupConfig(messages.quantity().toUpperCase(), 1, 6));
cm.addHeaderGroup(0, 8, new HeaderGroupConfig(messages.amount2().toUpperCase(), 1, 2));
cm.addAggregationRow(totalSummary);
ListStore<DeductionDto> store = new ListStore<DeductionDto>();
deductionGrid = new CustomEditorGrid(store, cm);
deductionGrid.setId("ACCOMPTES_PANEL_DEDUCTION_GRID_ID");
deductionGrid.setHeight(240);
deductionGrid.getStore().addStoreListener(new StoreListener<DeductionDto>() {
@Override
public void handleEvent(StoreEvent<DeductionDto> e) {