private void subscribe() {
int id = (Integer) itemsSelected[0].getData(NODE_ID);
if(!openSubscribe.isOpen(id)){
final Subscribe subscribe = new Subscribe(tabFolder_1, id);
CTabItem tabItem = subscribe.init();
openSubscribe.add(subscribe);
tabItem.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
openSubscribe.remove(subscribe);
}