Mysensors barometer graph

i’m sorry to bother you again, but i can’t find the way to add measurement unit. there is no field in entity settings.

i also tried to add this code in customize.yaml (as described here ), but it doesn’t work

homeassistant:
  name: Home
  unit_system: metric
  # etc

  customize:
    # Add an entry for each entity that you want to overwrite.
    sensor.bme280_sensor_51_2:
      unit_of_measurement: mB