How to set post url using admin api?

I’m using GhostSharp to access the API, but it’s not changing the url (it’s an old version written for API v.2, maybe it’s the problem?). And I don’t see anything about it in the ghost’s and ghostsharp’s documentations.

I actually solved it by changing the title of the post to the needed address, creating the post and updating the post with the proper title.