Hello hello hello!

I've been working on a GTA hack, and I'm trying to work on infinite ammo. I've got memory address 0x7FF693475A40 (Steam version GTA:O 1.44), but I've been working in singleplayer to try and get it working before I go into GTA:O for real.

The weapon I'm testing with is the base pistol, and clip size 12. So I'm writing 12 into that address.

The problem I'm having is there is an instruction setting 0x7FF693475A40 to its proper value constantly (up to hundreds of times per second), and I can't tell where it's pulling the value from. It has opcode 0x89 (MOV r/m32,r32) and the address it's pulling from does not have the value of 12 (what I'm writing) or the current ammo count.

Has anyone here had success with this?