Usrcheat Pokemon Soul Silver R4 Why There Is No Y Button For Cheats For Pokemon Platinum?

Why there is no Y button for cheats for pokemon platinum? - usrcheat pokemon soul silver r4

I already usrcheat.dat the code for many games, including Pokemon Platinum in my R4 contains. but when I try to play Pokemon Platinum, there is no cheat menu and samples. for other games like World of Digimon, cheat codes to work. I wonder what should I do with my usrcheat.dat file to use cheats in platinum. Please help me ..