I believe it's the encryption password. Meaning you would need to go to a website that lets you decrypt it into a text file. Alter what you want. Re-encrypt it. And replace the old encrypted save info with the new one?
I don't fully get it myself honestly. I gave it a try and lost all my food and points but got 99 chocolate coins. So make sure to back up your save before you try. I'll update if my dumb butt gets it working. XD
Edit
I still don't fully get it but if i go to food and change the value to 90000 it adds 90000 rather than changing the amount to 90000 to that works XD