How to show a player's level next to the name?

I've tried search, but I can't seem to find anything... So how can I put the level in the player's name? Sorry for my English, not native :P

There is no tutorial..

Nobody know it..

still nobady know?

If you have the right Gamefile,you can see the level next to the name.
Tim have this Gamefile &' a lot other pleople too.