Thanks for your answer.
but why is this? Logic tells me it should be the other way around..
Anyway, now I'm trying to get a single candidate with the get_candidates-call using a filter, but I can't seem to get the filter to work.
I've tried, among others, 'id;isequal;<id>', 'id:isexactly;<id>', 'candidateID;isexactly;<id>', but none of them seem to work (they give me the error 'Invalid filter: candidateID;isexactly;3805416').
Can you please give me an example for the filter to use to retrieve only the candidate for the ID I have? Thank you.