Possible to refer to files in a subfolder

[NoodleNewbie]

Hi:

Is it possible to refer to a file in another folder?
Example

FOLDER A
contains
folder AA
folder AB
folder AC

If I have a Hazel Rule on Folder A, is it possible to reference the files within folder AB?
I want to reference these files, with Action (set the color label).

Normally I would put a rule on folder AB, but in this situation, there is no criteria that will hold true.
I tried the option under conditions "any of its subfiles or subfolders". But the rule did not start.

Thankyou for your help

[Mr_Noodle]

I think you want Hazel to go into subfolders. Search the help as there is a chapter there on it.