State return switch

[sg72]

Hello,
I am having a status return issue with my roller shutters.
When panes are open, they are displayed “off” in the developer tool. As a result, the switch button is also found as closing while the shutters are open. The icon is well displayed to him as covered. How to put the switch as open? How can I reverse the state?

switch:
  - platform: template
    switches:
      tousvolets:
        friendly_name: "Tous les volets"
        value_template: "{{ is_state('switch.volet_hangar_md', 'on') }}"
        turn_on:
          - service: switch.turn_on
            target:
              entity_id: switch.volet_hangar_md
          - delay: "00:00:00.500"   
          - service: switch.turn_on
            target:
              entity_id: switch.volet_baie_md
          - delay: "00:00:00.500"    
          - service: switch.turn_on
            target:
              entity_id: switch.volet_bureau_md
          - delay: "00:00:00.500"
          - service: switch.turn_on
            target:
              entity_id: switch.volet_garage_md 
        turn_off:
          - service: switch.turn_off
            target:
              entity_id: switch.volet_hangar_md
          - delay: "00:00:00.500"    
          - service: switch.turn_off
            target:
              entity_id: switch.volet_baie_md
          - delay: "00:00:00.500"    
          - service: switch.turn_off
            target:
              entity_id: switch.volet_bureau_md
          - delay: "00:00:00.500"
          - service: switch.turn_off
            target:
              entity_id: switch.volet_garage_md  
      volethangar:
        friendly_name: "Volet Hangar"
        value_template: "{{ is_state('switch.volet_hangar_md', 'on') }}"
        turn_on:
          service: switch.toggle
          target:
            entity_id: switch.volet_hangar_md
        turn_off:
          service: switch.toggle
          target:
            entity_id: switch.volet_hangar_md
      voletgarage:
        friendly_name: "Volet Garage"
        value_template: "{{ is_state('switch.volet_garage_md', 'on') }}"
        turn_on:
          service: switch.toggle
          target:
            entity_id: switch.volet_garage_md
        turn_off:
          service: switch.toggle
          target:
            entity_id: switch.volet_garage_md
      voletbureau:
        friendly_name: "Volet Bureau"
        value_template: "{{ is_state('switch.volet_bureau_md', 'on') }}"
        turn_on:
          service: switch.toggle
          target:
            entity_id: switch.volet_bureau_md
        turn_off:
          service: switch.toggle
          target:
            entity_id: switch.volet_bureau_md
      voletbaie:
        friendly_name: "Volet Baie"
        value_template: "{{ is_state('switch.volet_baie_md', 'on') }}"
        turn_on:
          service: switch.toggle
          target:
            entity_id: switch.volet_baie_md
        turn_off:
          service: switch.toggle
          target:
            entity_id: switch.volet_baie_md