Start playing playlist on echo from spotify

I see that I can start playing music from an echo in a rule. But how do I select a playlist in Spotify to be played?

Pretty that the Echo Speaks app has that capability.

So I can go into the Echo Speaks app and can select the playlist to test and that works, but in RM I am unable to get it to play the playlist I want. Can't even get it to play a track in the playlist (figured if I picked a track in the playlist, it would keep playing the playlist).

Should be able to execute the Echo Speaks command from RM.

For playing Spotify playlist on Echo, I do that in another way. That is to use the DRmare Spotify Music Converter to convert and save Spotify playlist to local device. Then I can move Spotify music to the device I like for listening.