[KenWittlief]

the digital inputs on the RC are already defined in the code for you - they can only have a value of 1 or 0

all you need to do is look at the right variable

rc_dig_in01 is digital input one on the RC

so you can do stuff like

if (rc_dig_in01 ==1) variableXYZ=123;

if (rc_dig_in14 ==0) variableQRS=127;

what else do you want to do with them?