Unable to add additional assignee in interactive filter

[Doraemon]

I am trying to create an interactive filter for additional assignee list of incident table.

When i am trying to add a referance the additional assignee is greyed out. Is the field not allowed for interactive filter?

[Brian Lancaster]

Can yo provide more clarity with screenshots. Interactive filters are for reports on dashboard. I'm not sure why they would cause any issues with the field itself on the form.

[Doraemon]

Hi here's the screenshot. I am trying to update interactive filter reference

[Brian Lancaster]

Yes it does not look like it will work. Technically this is a list field that does reference a table but it is multi-select. I think that is where the issues lies. Also like other list fields it does not have to point a record in the table as you can add email address.