Pokemon gender modifier

[Firebird2019]

Can someone please make me an action replay code for pokemon platinum that lets you change your POKEMON'S gender without changing their nature? I'm trying to change my buneary's gender from male to female but everytime I do it with PKHex it doesn't work.

[theSLAYER]

Pokémon caught in Gen 3 and Gen 4 games have will have this issue;
Gen 3 & 4 datastructure forces Nature and Gender to be both derived from it's Personality ID (PID).
(Read about that here)
 

So when you change it's gender, you end up changing it's PID, hence nature has to change too.
(Also, IVs will become invalid, forcing the mon to be illegal; IVs are associated with PID)

 

You gotta generate a whole new PID that has the correct nature and gender. Use Pokefinder for that.