>>21744062From what I've tested on my Pokes with the codes:
- It changes the stat of a Poke realtime (worked for my Lv85 Jolly Tropius, probably works for Lv100s too)
- It apparently ignores the 510 EV total restriction.
I noted down Tropius' base stats before changing its EVs, and I just maxed out its Atk and Speed to 252 without resetting them to 0 first. Atk and Speed stats did change in the end, but the rest remained static (nothing really lowered). Confirmed my suspicions with the ST polygon since all other EVs remained as they were before the change, but Atk and Speed were maxed.