How to call group.set with trigger.entity_id

There is a helper group of sensors called suboptimal_storage_devices in my home assistant instance.

I would like to add the entity from trigger.entity_id when an automation is triggered as following:

triggers:
  - entity_id:
      - sensor.ds918plus_drive_1_temperature
      - sensor.ds918plus_drive_2_temperature
      - sensor.ds918plus_drive_3_temperature
      - sensor.ds918plus_drive_4_temperature
    below: 25
    trigger: numeric_state
conditions: []
actions:
  - action: group.set
    metadata: {}
    data:
      object_id: sensor.suboptimal_storage_devices
      add_entities:
        - trigger.entity_id

The action group.set failed.

Please help me out.

Silly me.
I have fixed it with:

triggers:
  - entity_id:
      - sensor.ds918plus_drive_1_temperature
      - sensor.ds918plus_drive_2_temperature
      - sensor.ds918plus_drive_3_temperature
      - sensor.ds918plus_drive_4_temperature
    below: 25
    trigger: numeric_state
conditions: []
actions:
  - action: group.set
    metadata: {}
    data:
      object_id: sensor.suboptimal_storage_devices
      add_entities:
        - '{{ trigger.entity_id }}'