Press W to put a number in the list. Repeat until you have a bunch. Then press C to translate the list into the cloud variables. Space clears the list. After that, press L to translate the cloud variables back into a list. The numbers should be the same as before, and in the same order. The numbers can't be decimals, or longer than 9 digits.
Just trying to put lots cloud variables into the same variable, because of that pesky limit. If you know of a better way to do this please tell me. This is why I need so many high scores, btw https://scratch.mit.edu/projects/80217714/