I'm trying to add additional open graph headers

I’m trying to add additional open graph headers in the settings and not sure why they are not saving. What values need to be inputed in the fields? As an example I’m trying to add:

OpenGraph Name: local

OpenGraph Content: en_US

OpenGraph Name: determiner

OpenGraph Content: auto

OpenGraph Name: site_name

OpenGraph Content: Groove Temple TV

Why doesn’t these save in the admin?