Hi,
Okay. I took a deep dive into how the ajax works for the post object field and it seems it’s actually calling the acf/fields/post_object/query action for the ajax querying.
http://www.advancedcustomfields.com/resources/acf-fields-post_object-query/
All the logic happens there.
But I’m not sure you can do an add_filter from within an ajax call.. I don’t see a way around this to be honest.
