1.8T TT8N Brake switch wiring

Hello, new to this Forum, I have managed so far to go from knowing nothing about freely programmable controllers to wiring and adjusting the black. Now I am facing a little problem, the brake light switch gives out 12v as original, the switch 1-3 is, I think, designed for ground. If I want to use the Cam#2 input for switching, nothing happens in the software. It doesn’t matter if I connect the pin to ground or +. Do I need to set something else in the software? Thanks in advance. Ah and btw the cam 2 shows ON all the time as on the screenshot