Pure fun with Alexa and Alexa Skills

[dynamicdave]

I think something is wrong with the path for the variable "state.sensor........"

Try removing that and use a simple TEXT only message and see if that works.

Oops - just noticed, your 'Devices' entry is incorrect. It should be the name of your Alexa, like this...

I've not tried doing it the way you have it set in YOUR screen-shot.

EDIT: I've just tried selecting a device using 'msg.payload.name' and that seems to work.