Double Quotes Array in MultiSelect and Postgres Filter

Hey,
I want to create a MultiSelect Dropdown Menu that filters a table in Retool. I want to filter the Postgres Query witht the Where column IN ({{...}}) statement. Unfortunately the Dropdown (which is also loaded by a database column) returns the array values in the array format with double quotes ["a", "b", "c"] but it seems that postgres has a problem with that and expect a single quote array ['a', 'b', 'c']. Can you help with that ?
Thank you