Message expression in the Notification Block

I am trying to use the “Label” tag to populate a Notification in a Notification Block. When I use it, I get “Null”. Where is “Label” get its value? I would like to use the “Label” to identify the Line Name and put it at the beginning of the First Line of the message.

Thank you for any help with this.

Of Course. Right out in plain site. LOL
Thanks a bunch!!

Glad to help