In your original post, the format of the tags seem to be OK.
In the bundle you provide, the format is incorrect. It’s a string consisting of:
“1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,”
Instead of being an array of numbers. So, if you get back to the array of numbers like your first post, that should fix it. I think removing the quotes around “310. id” should do it.
In case you didn’t see it, someone else had a similar problem and it turned out that the easiest way to do what you,re trying to do is to edit a post (which might be what your second call is doing, but jsu tin case):
Unfortunately I don’t have a WP setup I can test but I will try later this week if you haven’t ofound a solution. I’m also planning to write something that does that. Not sure if it will be with Make or a standalone app, though.
L