How to make this character modifier code work

[Elfas]

Greetings everyone! I hope you are doing well. I have a question about a game called Zill O'll Infinite Plus for psp. There is a character modifier code for this game which allows you to change the protagonist to another character. However, when one changes the character, the game crashes in the battles. I believe this is because the game has modified the protagonist to only be the protagonist, not someone else. But if the second, third or the fourth character are changed to another character, it will work since in the PS1 version of this game, it is possible to change them. This is my question. Can I find the character modifier code for other characters based on this code or should I discover codes for each of them? And if it is not troublesome for hackers, is there anyone who would accept to do so?


And would I be able to port the codes to the PS2 version of the game? The psp version has other features, more characters and more events.


Thanks for reading.

[Elfas]

I have made the first character modifier work. However, it would be wonderful if someone could tell me how to port the psp codes to the ps2 version of the game.

Oh by the way, this is the code.

_C0 CHARACTER CHANGE
_L 0x2028F248 0x00yy00nn