Show "Record Not Found" using a text search input query

I have a text search input query that filters a repeat region. It works great!

However, it seems I have forgotten how to set up the dmx-hide and dmx-show to display the text “Record not found!” when the search is empty.

Do I use the dmx-param:search=“search.value” somehow to determine the true or false result?

I have a feeling that it is much simpler than I’m making it or haven’t had enough coffee to clear the old man’s head.