Struggle with Subfolders

Hello,
I have a rule that uses an Automator workflow to convert BMP files to TIFF. The rule is as follows:
If:
Extension is BMP
Do:
Run automator workflow - BMP Conversion
It works great but I would like it to be able to look into subfolders but I can't get it to work.
For example, I have my main folder called Media. In that folder, I have a subfolder called 2019. Inside of that subfolder I have another folder for each batch of images from the scanner. The scanner automatically add this folder for each batch. I would like Hazel to watch the 2019 folder for the folder that the scanner adds and then convert the images using the automator workflow.
I tried adding this rule:
If kind is folder
run rules on folder contents but it did not work.
Any suggestions?
I have a rule that uses an Automator workflow to convert BMP files to TIFF. The rule is as follows:
If:
Extension is BMP
Do:
Run automator workflow - BMP Conversion
It works great but I would like it to be able to look into subfolders but I can't get it to work.
For example, I have my main folder called Media. In that folder, I have a subfolder called 2019. Inside of that subfolder I have another folder for each batch of images from the scanner. The scanner automatically add this folder for each batch. I would like Hazel to watch the 2019 folder for the folder that the scanner adds and then convert the images using the automator workflow.
I tried adding this rule:
If kind is folder
run rules on folder contents but it did not work.
Any suggestions?