Dim Lights in automation

Configuration Zigbee
1

Hi,
I’m trying to dim 6 lights in an automation. I have an IKEA 4 button remote and 6 lights are on brightness 80%. What I want is to press a button on the remote so that the lights all dim to 20% brightness. I just can’t find an action (call service) that dims the lights. Only Turn light on/off or toggle. Can someone help me?

The lights are alle Zigbee bulbs in ZHA with Sonoff dongle.

2

Can you post the automation code you are running? Also, have you tried this:

3 
service: light.turn_on
target:
  entity_id: light.your_light_group
data:
  brightness_pct: 20

docs here:

4

Thanks! it works.