Pokémon Ruby: Help for Cheats!

[XJ55]

Hello!

I need help for cheating my Pokémon Ruby. I need to activate both " Steal other Trainer's Pokémon" and "100% Catch Rate" on my Pokémon Ruby on an emulator. What I'd like to do is stealing some Pokémon from a trainer in the secret base with the balls I used to catch them some time ago, since I lost those Pokémon and I'd like to get them back in 3rd Gen with the right IV/EV and Nature (and PID?), without creating them from zero in Pokémon Encyclopedia. I will just edit OT/ID/SID and place of where they were caught, since I'd like the Pokémon to look original. ( If I use the "100% catch rate" it doesn't change the Pokémon, right?)

The problem is that I can't get any code to work on my Emulator. I'm using Visual Boy Advance and the GameFaqs Codes for the US versions of Ruby in the Cheat-Gameshark section of the emulator. I used both a Rom Version 00 AXVI and Rom Version 00 AXVE Pokémon Ruby Roms, but none worked. Can anybody help me? =/

[XJ55]

Nobody can help? I tried again, but nothing... I'm using an Italian .sav, anyway...

[ReignOfComputer]

Is there a Master Code you're forgetting to enter?

[XJ55]

No, I almost always enter the mastercode =/ I tried without entering it, but nothing happened anyway...