Custom text in figured bass?

The source I am working with has besides of ”Tasto Solo” also ”Unis” as a figured bass marking. I can easily create text with the same style as the figured bass tasto solo, but is it possible to add ”unis” to the figured bass library? Would be handy since I want to display the figured bass for the continuo players but not necessarily for the bass players.

No, this isn’t possible, I’m afraid.