Filtering a table with parameters using MapSqlParameterSource

Question

so I have a simple query like this:

SELECT id,
       firstname,
       lastname,
       email
FROM accounts WHERE LOWER(firstname)  LIKE ANY(:firstnames);

I am trying to pass the parameters such as:

    public List<TestRow> queryTest(List<String> firstname) {

        List<String> firstnames = new ArrayList<>();

        firstname.forEach(name ->{
            firstnames.add("%"+name+"%");
        });

        MapSqlParameterSource namedParameters = new MapSqlParameterSource();
        namedParameters.addValue("firstnames", firstname);
        return queryForList(QUERY_PREFIX + "test", namedParameters, TestRow.class);
    }

I did try to modify the elements to '{%kaan%,%melis%}' so that LIKE ANY works but I get ERROR: syntax error at or near "," error everytime. What is my mistake? thank you in advance.