Rule is not firing on Hire flow

Summary:

We have a rule to set some values on Assignment DFF based on the chosen BU. It works on Assignment update flows but not on the Hire flow.

Content (required):

Can someone advise if the rule has been built incorrectly or if I am missing something?

Version (include the version you are using, if applicable):

22A

Code Snippet (add any code snippets that support your topic, if applicable):

See code attached.