Google hub doesn't speak to me

Hi, I have a problem with a script. I wanted to make my google hub talk by making it tell the temperature of my home. I premise that other scripts like turning on a light etc via google home works.
When I run the google command it tells me it is done but from the hub I don’t hear anything.
If i start the script directly from hassio the hub speak…
What am i doing wrong?

service: tts.google_say
  entity_id: media_player.hub_sala
  language: it
  message: >-
    In casa ci sono {{states('sensor.stazione_meteo_temperature')}} gradi ed una
    umidità del {{states('sensor.stazione_meteo_humidity')}} percento.