Hi. First I would say sorry if it's hard to read because I am not a native speaker.

I've just started to learn about using this API and doing some experiments to get in this thing. I tried to use COMMA and PIPE separation for 'with_release_type' as the document says it can be, but I faced the problem that both comma and pipe separation put out same result.

The below are the queries I used for the test. First one used pipe and expected to output many results matched either 3 or 4, and the second used comma and expected to output NONE because there is no movie released both in theater and digital within designated period (only two digital-only movies returned for '4 only' discover query). But both queries output 23 results and it seems both comma and pipe are processed like pipe.

https://api.themoviedb.org/3/discover/movie?api_key=[api_key]&language=ko-KR&region=KR&sort_by=primary_release_date.desc&include_adult=false&include_video=false&page=1&primary_release_date.gte=2019-10-01&primary_release_date.lte=2019-11-01&with_release_type=3|4&with_original_language=ko

https://api.themoviedb.org/3/discover/movie?api_key=[api_key]&language=ko-KR&region=KR&sort_by=primary_release_date.desc&include_adult=false&include_video=false&page=1&primary_release_date.gte=2019-10-01&primary_release_date.lte=2019-11-01&with_release_type=3,4&with_original_language=ko

please let me know if I'm doing something wrong . Thanks a lot to all.