In case someone searches for this - command also works even if you enter it right before sitting in a chair, don't have to restart or enter it before starting the quest. Also, all the info about conditions doesn't appear to be correct. In my case I didn't know about those conditions or secret ending, but I still chose the same exact things in "chippin in" (carve initials, guy who saved me), also I had 60% (no idea what I chose to upset him), and secret ending never triggered. This is perhaps the stupidest and most random thing I ever encountered in any game, just need to guess the developers mindset or stumble upon the ending by yourself by accident.