Get row level security values to card/textbox

Hi! I need to return row level security values to card/textbox.

Example:

If User1 has RLS to rows of organisation "Department 1" card shows a value "Department 1"

If User2 has RLS to rows of organisations "Department 1" and "Department 2" card shows values "Department 1, Department 2 "

I know I can return one value with DAX "rls_measure=maxx(filter(values[organisation[departments]...." but how can I return multiple values?