Re: Current HP/Max HP
Harak is right. To activate the 12 digit code, each winch rooms (in six separate rooms)controls two of the digits. So 33a lets you adjust the first two digits anywhere betwee 00 and 99, and 33b controls the second two digits from 00 to 99, etc.
So unless the corresponding digits already match what you want in their respective winch rooms, you have to visit each room to change the code.
You may remember seeing these change when you were traveling earlier. This was Esylia changing the digits to open the gate to the demons. My "clue" was that you could pinpoint her location based on which of the digits were moving, but you guys decided to take an 8 hour rest instead. Had you attacked Esylia back then instead of resting, the demons would not be there. (You could have also viewed her through the viewer in room 30, but you had not explored that far yet. My original expectation was that you would use the statue/robot controls in room 29 to attack her with the statue while viewing from room 30.)
Luckily, though, you got her before she went around plugging in every code she knows. You may have noticed that she was using one code at a time, changing it each time you defeated the monsters that came through the portal opened by that particular code. First was the undead, now the demons.