How to pass a list of entities to a script field

Configuration
1

Hi all,

I am currently moving my home from Jeedom to HA and its amazing.
Now I just brought my Z-Wave Fibaro Roller Shutter 3 to my Home Assistant.

In Jeedom I used to add commands to have specific custom defined positions for each shutter (middle-low, middle-high, light-through).
I then have several scenarios using it, and also some physical switch scenes bound to it (2 times up button, 3 times down …).

As if I’m right we cannot add custom entities to a device, I ended with a script taking arguments (fields) for shutters and position to affect. But I can’t pass the field to the set_cover_position, what am i missing ?

alias: Shutter Position
sequence:
  - action: cover.set_cover_position
    metadata: {}
    data:
      position: 20
    target:
      entity_id: {{shutters}}
fields:
  open_mode:
    selector:
      select:
        options:
          - 20%
          - 40%
        multiple: false
    name: Opening Mode
    required: true
    default: 20%
  shutters:
    selector:
      device:
        multiple: true
    required: true
2

Single-line templates must be wrapped in quotes.

      entity_id: '{{shutters}}'

Reference

Important template rules