Diamondkiller

Thanks for the information, i bought a pokemon with waterfall and it worked but i will get the Hm now, thanks you and good game.

Hello, i have a little problem as i can't acces the Sinnoh League because i don't have the Hm Waterfall which is at Hoenn, and i can't go back to Hoenn before i beat the league. I'm blocked and don't know what to do. Is there a way to obtain the HM at Sinnoh ? Thanks