Question: I created tens of **Label** over a **Group**, I added a right click menu for every Label, and then attached an event **listener** to the menu, then How I can get the exact Label which I right-clicked on via the menu item select listener (**ContextMenuEvent.MENU\_ITEM\_SELECT**)? Thanks very much

Answer: 
Produce XML output. Check the time taken and the file size.

Produce JSON output. Check the time taken and the file size.

Decide which is best.
Better depends on your case. For your case it could be JSON. It's light and easy to parse in Javascript (if you'll use it with JS)