Numbers in team names

[ZaZuBoi]

Hey guys, could you help me with something?
I'd like my team to have a number in its name (something like Schalke-04). But when i try to add it, the game just doesn't let me do it, it only lets me put in letters, not numbers. But i've seen a lot of teams in Top Eleven with names like "Olympique74" etc, so i know it's possible. So what should i do to make it work?