I know it must be simple, but i cant get alexa to...

[hrpuffnstuff]

Trying to get alexa to play on all my echos (3) "play everywhere is the skill im using

I ask alexa
"Alexa open Global Player and play smooth UK and play on the everywhere group"

She says  "Sorry i dont know that command"

I then just ask to "open global player and play smooth UK"
She does
I ask "Alexa play on the everywhere group"
(To which i have already set up)
She still says "sorry i dont know that command"

Help please