Unrar a file inside a folder inside monitored folder

First of all any help is appreciated. This has been driving me nuts and I feel like I'm missing something so simple. Even using the preview option has me lost. If its all green it doesn't do what I want and if I try and add another marker to follow preview tells me I'm wrong and directs me to create a marker that already exists or something I don't know what to provide it.
Example:
Monitored Folder is "Completed"
Items in this folder are nested inside other folders that are created when the download is completed.
So "Completed" folder>"Test" folder> Rar file that needs to be unpacked. The .rar file could be standalone or a multipart (r.01,..)
The issue for me is that the folder won't always be named "Test" it will be random for every subsequent downloaded.
So what I want is to have Hazel monitor the folders that are created in the "Completed" folder. If any of the folders contained within contain a .rar file I want unarchiever to kick in and unpack the file.
Preferably not deleting the original rar files after unpacking.
I hope this makes sense. Again any help is appreciated.
Example:
Monitored Folder is "Completed"
Items in this folder are nested inside other folders that are created when the download is completed.
So "Completed" folder>"Test" folder> Rar file that needs to be unpacked. The .rar file could be standalone or a multipart (r.01,..)
The issue for me is that the folder won't always be named "Test" it will be random for every subsequent downloaded.
So what I want is to have Hazel monitor the folders that are created in the "Completed" folder. If any of the folders contained within contain a .rar file I want unarchiever to kick in and unpack the file.
Preferably not deleting the original rar files after unpacking.
I hope this makes sense. Again any help is appreciated.