appController.service.getInvoiceProviderByNumber(tbNewInvoice.getValue(),
										new AsyncCallback<InvoiceProvider>() {
											@Override
											public void onSuccess(InvoiceProvider res) {
												if (res == null) {
													InvoiceProvider ip = new InvoiceProvider();
													ip.setReference(order.getName());
												}
													editInvoice(ip);
												} else {
													editInvoice(res);
												}

												btnEditNewInvoice.setEnabled(true);
											}

											@Override
											public void onFailure(Throwable caught) {
												System.out.println("Cannot communicate with the server ! " + caught);
											}
										});