Patch API request issues


Im having issues using the Patch API to update multi-reference fields and I dont know why its not working. I have checked all IDs, collection, site and field and Im pretty sure the code is correct. Can anyone help? Everything works when I create the item, but when I update the fields, it get blanks. Here is the body code. In this instance I have pasted the raw webflow-ids as a test before I path to them.

“fields”: {
“product-option-1-value-4”: [“65416f7bbe3b1315aedd6c3b”],
“product-option-2-value-5”: [“65416f8223e7961b09ff80da”]

Here is my site Read-Only: LINK
(how to share your site Read-Only link)