Bl Touch calibration problem

[Major]

What 3d printer are you using?
What firmware are you using?

I know for an creality ender 3 v2, the manufacturer OEM firmware is lacking. You can't adjust preset from the terminal, and a new firmware flash is required
Specifically I use Jyers Marlin code as a starting point and then modify various attributes specific to my machine

https://github.com/Jyers/Marlin/releases

If you're not familiar with coding or how to flash hardware, don't do it until you're sure, or you can brick your board

Its a GEEETECH Pro W Prusa I3 DIY.
i added the bltouch/3dtouch myself and flashed marlin already,
i don't really know coding i can kinda read it and work it out but not write it.
i followed this https://www.geeetech.com/wiki/index....eveling_Sensor
I understand that the specific part of code that sets parameters for the Zero offset is wrong but marlin has a lot of pages and i think it would take forever for me to narrow it down so i was hoping for someone outside knowledge.