I can create a new request and, say, set the priority, but I can't find an email config that would then change the priority on that call, or set a category?

Here's my email config

And here's a sample email to update an existing request:

And here's the updated request conversation:

I've highlighted the unchanged Priority and Category...

I've used the Request ID format in the subject and in the body, but neither seem to help with the email command parsing...what have I missed?