Google Assistant working with sensors?

Configuration
58

I’ve got xiami temperature working with the following automation:

Trigger
entity_id: sensor.lumi_lumi_weather_temperature
platform: state

Action
data:
  payload_template: '{{ states("sensor.lumi_lumi_weather_temperature") }}'
  topic: ac/temperature/current
service: mqtt.publish

and MQTT listen topic:

 current_temperature_topic: "ac/temperature/current"
 temperature_state_topic: "ac/temperature/current"

Note: no current_temperature_template or temperature_state_template are needed.

Thanks @Florian for the initial setup guide.