Formatting multiple entities for service using data_template

Configuration
1

Hi everybody,

I’m trying to change the brightness of all enables lights without bothering the ones that are off with the following script:

  light_brightness_time:
    sequence:
      - service: light.turn_on
        data_template:
          brightness_pct: "{{ states('input_number.light_brightness') | int }}"
          entity_id: >
            {%- for state in states.light %}
            {%- if state.state == 'on' %}
            - {{ state.entity_id }}
            {%- endif %}
            {%- endfor %}

The template engine’s output looks correct to me:

light_brightness_time:
    sequence:
      - service: light.turn_on
        data_template:
          brightness_pct: "100"
          entity_id: >
            - light.kitchen
            - light.kitchen1
            - light.kitchen2
            - light.kitchen3
            - light.zigbee_group_light_kitchen

I confirmed this is working by executing the code above (without the ‘>’). But HA does not agree with the conditional code since I receive the following error:

Error executing script script.light_brightness_time. Invalid data for call_service at pos 1: not a valid value for dictionary value @ data['entity_id']

After hours of searching I hope one of you can point me in the right direction or tell me how to properly format the entity_id part!

2

Take a lookk here

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