HI Jued,

I have tried to create a UI policy with CONTAINS on reference field and able to save the UI policy.

You can follow the suggestion of Kannan to get to the specific value in the reference columns. It is easy and advisable.

If you need control over the returning you can go for Assigned To Contains javascript:getAssignedUsers() // this returns the sys_ids (i prefer this as this gives me entire control in script which i can play around as I want)

Please let us know your requirement, may some one of us can help you.

Mark if it is helpful or correct, feedback is appreciated