DraStic

If you want to use a cheat where you have to press SELECT and UP simultaneously, you need to enable the option 'Always show Start and Select button'.

And... That was my problem. I assumed "x" was select because there was no select button and when you enter the menu it says to press "x" to select ...

I'm playing Pokemon Platinum (US). I made sure cheats were ensembled and have successfully used cheats that do not require in game activation. However, I'm trying to use the "All Items Codes (SELECT+UP)" for Poffins and Battle Items. I tried just Poffins first, then just Battle items.

When I go ...