Default Employer Description based on Business Unit

Hello,

I would like to default the employer description on the requisition posting based on the business unit. Currently the rule is not defaulting any employer description. The employer descriptions remain blank when I create a requisition. Below is how the rule was set up. The customer makes requisitions from positions. That is why I am trying to pull in the Business Unit from the position. Any suggestions?

The client is on 22C.

Thank you!