Default value for Work Relationship DFF attribute for Termination action

Summary:

In quick action Termination we need default Work Relationship DFF Attribute, tried autocomplete rule it doesn't work.

Content (please ensure you mask any confidential information):

Created Autocomplete rule:

When try it out it doesn't fill the value.

Is it bug or I am doing something wrongly?

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

23C

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