Nodon SoftRemote automation and dimming

Configuration
1

Hi,
I have a NodOnn softremote and I want to dim three lamps with ‘+’ and ‘-’ buttons. I found in this form code for a single lamp which works. I try to modify it for 3 lamps but I can’t get it working the right way, With code included in this post I have three ‘entity_id’s’ and one ’ brightness’ lines. Guess what all three lamps dims if I press the “+”, but I do not know why it works. If I add two additional brightness lines I get an error. Combining the entity_id’s in one brightness line gives also an error.

I also tried to use the group-name of the lamps as entity_id but that doesn’t work either.

Which official code is needed to to dim three lamps? Again the included code works but I have only one brightness line.

Automations

- id: '10000000000001'
  alias: Verlichting aan
  trigger:
  - platform: event
    event_type: zwave.scene_activated
    event_data:
      entity_id: zwave.nodon_crc360x_soft_remote
      scene_id: 10
  action:
  - service: light.turn_on
    entity_id: group.verlichting

- id: '1000000000002'
  alias: Verlichting uit
  trigger:
  - platform: event
    event_type: zwave.scene_activated
    event_data:
      entity_id: zwave.nodon_crc360x_soft_remote
      scene_id: 30
  action:
  - service: light.turn_off
    entity_id: group.verlichting

- id: '1000000000003'    
  alias: Verlichting dimmen +10%
  trigger:
    - platform: event
      event_type: zwave.scene_activated
      event_data:
        entity_id: zwave.nodon_crc360x_soft_remote
        scene_id: 20
  action:
  - service: light.turn_on
    entity_id:
      - light.vloerlamp_tv__ik27
      - light.vloerlamp_bank__ik27
      - light.lamp_ladekast_kamer_ik14
    data_template:
      brightness: '{{ states.light.vloerlamp_tv__ik27.attributes.brightness|int + 31 }}'

BR,
Ron