Visualboyadvance List How Do Gameshark Codes Work On The VisualBoyAdvance?

How do Gameshark codes work on the VisualBoyAdvance? - visualboyadvance list

Lately, this has been listening to me. I play Pokemon Fire Red Boy Advance in the eye, and I thought it would be interesting to see how the GameShark codes work, but when I enter the code in the list of "fraud" zone is allowed, but the lie itself does not work. Can anyone help, I would be glad if someone explains it.

Thank you.