Code request: Bullet Bill item limit

[JerryHatrick]

I know CTGP has done this, I don't know how to implement this myself.
Ideally I would prefer to change it in StaticR.rel but I'm a noob and I don't know what address I'm looking for beyond 0x396E88 (NTSC).

Alternatively a simple code request would be ideal, if possible.

[Unnamed]

This code already exists HERE

[JerryHatrick]

Thank you for pointing me in the right direction, that code was exactly what I was looking for.