How to add multiple ztouch(z probing) buttons to interface

So Im a cnc beginner, I already managed to add a few working buttons to the interface, like G53 Z0, rapid to home, g54, g55, g56, and a touch off z with a plate thickness of 3mm, but due to the nature of my projects i change endmills manually alot so it would be helpfull to have a 2nd button with different plate thickness since my stocks arent the same height, at the moment I use 1 button and 2 different physical plates one is 3mm and other is 4mm, my gcode uses 3mm thicknes, so when I use the 3mm plate I get the Z0 on my stock, and when I use 4mm plate my Z0 is 1mm above stock, so with 2 buttons or more I could use 1 plate. But when I tried to create a second button which would use a gcode with different plate thickness i got an error "ztouch already used". Can I just rename something and use the same pin on db25 or would I need another pin for an extra button?