I’m a little confused as to what you’re trying to accomplish.
Correct me if I’m wrong:
You have a multi-select field assigned to the custom post type named “Products”. Inside that multi-select field, there are numbers that correspond to page_id’s. What you want to do is display the products (that have that page_id assigned to it) when you are on that page,
For example: When on (viewing) page_id=10, display all the products that have page_id=10 assigned to it.
Is that what you’re trying to accomplish? Posting screenshots of your fields that correspond to this would actually help as well.
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