Having trouble with rules.

Hi all, I'm having trouble getting this to work. I keep getting the "Line-length exception ERROR: No hashes loaded" error, but I'm not even sure if my command is correct anyway.

I have a hash, let's call it 123mysha256hash123 which consists of $salt + $password

Now, I already know the $password is "John Smith", so how can I brute force the hash and find the salt?

My command so far:


I guess I'm looking to see if my rule parameter is correct and any other obvious weirdness you see.

Thanks!