Modifing an API to take PayPal notifications, locate a Post by Tag ID and flip Published to Pending

Hey,

Have some pretty good research done, now I need some expertise…

Have a chunk of code that reads the return info from PayPal…

Now I have to get it to retrieve a Post by TagID

Once located I want to flip the Published status to Pending Review on that one Post.

I know the commands — looked them up… but I've never created an API before.

Here's what I do have — If this is your cup of tea — we should talk!!

OK, couldn't post it without it getting scrambled… so see the attached screenshot!

Thanks!

Robert