I'm trying to create my own style within the CBV command but am having problems doing so. It seems the syntax is not working properly. Or maybe I'm not completely clear on the format. See images below:

Now, when I change "FullPassageReference" to "ShortBookName", I get the following results. I've made no other chances and "ShortBookName" is an acceptable command. See below:

Why doesn't the passage header change according to my new specifications?