Delay / pause automation in automation.yaml

Configuration
1

I want to delay / pause an automation.
Thought I can stop the my siren always automatically by stopping the automation with a delay that than triggers an automation to stop the siren (turn_off). Tried to program in a simple delay in the automation but nothing happens. I used the UI to create the automation and enhanced the automation.yaml with delay to put in the delay. But nothing happens.
What is wrong here ?

- id: '1620941731695'
  alias: Alarm Siren auto stop
  description: ''
  trigger:
  - platform: state
    entity_id: alarm_control_panel.home_alarm
    to: triggered
  condition: []
  action:
  - delay:
      seconds: 10
  - type: turn_off
    device_id: 84c563f7b2c311250ee9e7c21e1f4737
    entity_id: switch.alarm_siren
    domain: switch
  - service: notify.notify
    data:
      message: Alarm siren auto stop
  mode: single
2

Did you reload automations? You need to do this if you manually edit the file.

3

Thanks. It was the reload. Super it is Wirkung. Thanks a lot.