Pokemon Platinum help! 3 Regi

I have a TRU Regigas.. when im trying to catch regice there where no earthquake happening after i step on every circles on the ground.. I'm not done yet with the pokemon league..

well, finish the pokemon league and try again

yeah.finish it and try again.

You also need the national dex, they aren't in the extended sinnoh one

If you don't mind using cheats, they work very well.