Filament buffer custom macros

Another 2 issues

  1. Why this macro does not turn off blue LED? Green LED works as intended but blue one stays always on.

  1. There are 3 sensors on feeder board


2.1 is [filament_switch_sensor filament_sensor]
2.2 is ?
2.3 is [gcode_button stall_push_stop]

My question is how to access 2, which mcu pin is this sensor hook to.