Broadcasting messages on Google Home and Next

Hello,

Beginner in the Home Assistant world, I am asking for your help so that my Home Assistant broadcasts messages on my Google Home and this under NODE-RED. And yes I like this graphical interface!

With the development tool, the text is broadcast on both Google devices.

The problem is with NODE-RED, I tried but I still have errors…

I can’t find a complete tutorial on the net explaining how to do it! Namely setting up the configuration file.yaml as well as a functional flow with the associated Json file.

I am attaching screenshots

Thank you in advance for your help.

Michel