Invoking scenes from Alexa

I have just created a scene for my Ceiling Light to enable Moon mode.
Is there anything I need to do to let Alexa see the new scene? And what is the voice command to invoke the scene?
Thank you!

IT doesn’t work… Alexa sees the scenes, but do not replay at voice command about the scenes. I hope they solve soon this problem… or I should ask to refound and publish a negative review.