PPSSPP Cheat Engine problem

[Slite]

Hey guys! Lemme just start saying how wonderful this emulator is, and if by any chance this is the wrong place to post this thread, please tell me where should I put it.

Im currently playing Yugioh GX tag force 3 on my ANDROID, and there are some cheat's id like to put in like for instance 1 Million DP (Currency of the game), the cheats are the following:

_C0 Max DP
_L 0x08835D14 0x24030000
_L 0x08AB5590 0x3B9AC9FF
_C0 Infinite DP After a Duel
_L 0x08854BF8 0x00000000
_C0 Instant Win (Press Select)
_L 0x59FBFA4C 0x00000001
_L 0x09E2B064 0x00000000
_L 0x098E6944 0x00000000

I followed all the instructions, put them on my Cheat's Folder, on the .ini, enabled the cheat, and they did appear.

But there are some odd things that happen:

1- The cheats have an interrogation mark "eg: One Million DP?)

2- They Don't work at all, and sometimes, after I turn them on the game freezes (unfortunatly the ppsspp (blah blah) Has stopped working), usually when its more than one cheat.

Can you guys tell me what am I doing wrong here? :/

Thanks in advance!

-Slite