}
private void onSheetDelete(SSDataEvent event) {
final Object[] payload = (Object[]) event.getPayload();
final String delSheetName = (String) payload[0]; //deleted sheet name
final String newSheetName= (String) payload[1]; //new selected sheet name
org.zkoss.zk.ui.event.Events.postEvent(new SheetDeleteEvent(Events.ON_SHEET_DELETE, Spreadsheet.this, delSheetName, newSheetName));
}