Media_player.join and target template not working

1

Hi,

i want to join my sonos speaker to one actual running speaker when I enter a room by the occupancy sensor. I could not get the target template working to get the entity_id…

The automation throw the error:

Error rendering service target template: UndefinedError: ‘media_player’ is undefined

Any chance to get some help here? :slight_smile:

trigger:
  - platform: state
    entity_id:
      - binary_sensor.ankleidesensor_occupancy
condition:
  - condition: state
    entity_id: media_player.sonos
    state: "on"
action:
  - service: media_player.join
    data:
      group_members:
        - media_player.{{ area_name(trigger.entity_id) }}
    target:
      entity_id: |
        {% if media_player.wohnzimmer == 'playing' %}
          media_player.wohnzimmer   
        {% elif media_player.toilettenbox == 'playing' %}
          media_player.toilettenbox  
        {% elif media_player.kueche == 'playing' %} 
          media_player.kueche  
        {% elif media_player.bad == 'playing' %} 
          media_player.bad  
        {% elif media_player.ankleide == 'playing' %} 
          media_player.ankleide  
        {% elif media_player.schlafzimmer == 'playing' %} 
          media_player.schlafzimmer  
        {% endif%}
    alias: Join Room