Facebook Pixel - Custom content_type not being sent

Trying to override the “content_type”:“product” being sent to Facebook Pixel with “content_type”:“hotel”

The help says “Content Type can be product or product_group based on the content_ids or contents being passed. If the IDs being passed in the content_ids or contents parameter are IDs of products, then the value should be product. If product group IDs are being passed, then the value should be product_group.”

Using the debugger I can see that the content_type in the Action is correct but the Server-side network request for Facebook Pixel doesn’t change and is still sent as “content_type”:“product”

Should the override work?