Any news here? I’m facing the same situation in my project. When I try to update the post object field dynamically, it stays blank. I’ve already tried to send it as an Array and/or with the field ID but it didn’t work either.
In my case the post is already created. This is not a newly created post. I don’t know if there is any difference in this case to the previously mentioned from @toneseeker
Hoping for a suggestion