I’m not sure what type of fields you have but if you’ve gone this far on your own. I have a bunch of examples of how to load different types of ACF fields using AJAX based on other fields. Like I said, I may not have the exact thing you’re looking for but it sounds like you might be able to figure it our if you have some good examples. https://github.com/Hube2/acf-dynamic-ajax-select-example
