I've used the search function on the forum to look for a topic on this but I couldn't find it under G/S/C. So here it goes:
I read about the possibility of using the box trick to improve your Level 100 Pokémon's stats, making them fight and then putting them in the box so that the game recalculates their stats according to their effort points. I made my Charizard battle against both wild and Trainer Pokémon, choosing the opponents appropiately to take the maximum Effort Values for each stat. but after at least 30 battles, I left Charizard in the box. I took it out again. Nothing had happened!
Did I do something wrong? If so, what was it? And no, it's not that Charizard already has the maximum possible stats.