This fixes the issue reported by @baroquedesign in the latest comment on issue #11.
As you don't need the entry meta item to have a value set when the entry is being created the update_entry_meta_callback can be removed from the array.
I also switched it to using the add-on frameworks own get_entry_meta method for adding the meta item.
@richardW8k Thanks for this PR! Take a look at the couple of comments I left regarding the add_entry_meta and one last bug I noticed. Should be able to get this merged this week.
This fixes the issue reported by @baroquedesign in the latest comment on issue #11.
As you don't need the entry meta item to have a value set when the entry is being created the update_entry_meta_callback can be removed from the array.
I also switched it to using the add-on frameworks own get_entry_meta method for adding the meta item.