cheat help

[x3mgunner]

I need help on complete sinnoh dex cheat on pkmn diamond
I press l + r but it dont show all pokes in the dex
I think my L and R buttons are not working
Any help?
I need this cheat so i can complete the dex in platinum

[beansta]

Well i know the cheat works (was one of the things i tested because its one of those obsure cheats that dont work when others are enabled), but yes it could be that your touchscreen doesnt register the double input properly.

Are you able to test it with a gamepad?