I've been trying to get the value from a parent page's custom field (specifically an image url) into a child page so that it shows both on the parent and on the child page. Essentially an image that gets shown on the parent page and is pulled down and shown on the child pages too.
The problem is that when I call the field on the child page, nothing comes up. I've tried to use parent page IDs, trying to tell it to get it from $post->post_parent as per this suggestion but to no avail.
How can I pull the value to a child page from a parent page using Advanced Custom Fields? Any Suggestions?