Philips Hue bulb deconz brightness control. Why this doesn't work?

I have deconz installed on my raspbee and all is working good so far, buld (Hue and switches (xiaomi)recognized, I can on/off them. But when it comes to changing brightness in hue bulbs, I can do than on HA panel, on phoscan app, but in automation not, why? What am I doing wrong?

 alias: Hallway light dark mode
  trigger:
  - at: '21:25'
platform: time
  condition:
  - condition: state
  entity_id: light.hallway_light
  state: 'on'
  action:
  - data:
  brightness: 15
  entity_id: light.hallway_light
  service: light.turn_on

Above code can change brightness from let say 80 to 15 on set time, so all good.

But next day when I turn it on with code:

 alias: Hallway light bright mode
  trigger:
  - at: '15:25'
    platform: time
     action:
  - data:
      brightness: 80
      entity_id: light.hallway_light
    service: light.turn_on

Above code only turn on bulb to random low brightness like 36, 27 etc.

Any suggestion please?