How do we use gsql_uuid_v4 token function in a load job?

This is the part of the query that seems failing, can anyone help spot the problem.

CREATE LOADING JOB load_part FOR GRAPH partmod {
    DEFINE FILENAME f = "~/mydata/partmod.csv";

    LOAD f TO VERTEX part VALUES (gsql_uuid_v4() , $"Part", $"Part Desc") USING HEADER = "true", SEPARATOR = ",", QUOTE = "double";

Expecting to load guid for the vertex as id attribute