Hazel: how to keep folder below certain size?

Hi, I have a Hazel question. Right now, i have a rule that monitors the size of a folder, and if it gets above a certain size, files older than x days are deleted (moved to trash).

However, what I want is for it to monitor the size of the folder, and if it gets above that size then delete the oldest file(s) until it's back down below the set size. Is that possible?