Does Field Modification rule support collective agreement field in Worker Assignment

Summary:

How to show warning message on modification of collective agreement field on worker assignment for an individual.

Flow: Add Assignment

Content (required):

We are trying to apply field modification rule on collective agreement field in Add Assignment flow but its giving error.

Wondering if this is supported by autocomplete rule. If any of you have achieved similar requirement, any tips or guidance would be appreciated.

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

22C

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

NA