Added the new string via HA Designer.
Populated the PNP Prompt for options in the template as per the sample above.
Regen and reload, then plugged in device.
PNP detected it and new screen appeared
but no text
Checked dB for txt, it's there alright - spotted a field AddToOrbiter, set this to '1'.
regen, reload plug device in again and txt appears!!
Now did I do this correctly? or should that field have been set via some setting in HA Designer?