Google Lenovo Cast

Dear all,
I’m unable to send an automation to my google lenovo cast to play something.

When I go to media browser folder on HA and choose to play one of the mp3 samples I can put them on Google Lenovo cast without any problem.

But if i try to call a service, for example, when I press a button (trigger) I call a service:
action:

  • service: media_player.play_media
    data:
    media_content_id: /local/media/Hello.mp3
    media_content_type: audio/mp3
    target:
    entity_id: media_player.master_bedroom_display
    mode: single

Google Lenovo device blinks but don’t play anything.
Had anyone the same behavior?
Any kind of clue would be appreciated

Thank you all