'Returns array' is not working. what would i need to insert instead of 'array'?

hey, one question regarding the JS extensions:

    returns array
    language JAVASCRIPT
    as 'function string_to_array_test(a, b) { return a.split(b) }';

`returns array` is not working. what would i need to insert instead of `array`?

Hi,
We just need to specify the data type of the elements of the array being returned:

RETURNS ARRAY(TEXT)