Setup a IFTTT switch with automatic on/off

Configuration
1

I have a Sonoff Touch Switch that I triggered by IFTTT.
I wish to automate on and off … but I’m unable to swtch off by script… from last movement detected from the motion sensor.
What I do wrong?

automation:
  - alias: sonoff corr on
    initial_state: true
    trigger:
      - platform: state
        entity_id: binary_sensor.motion_sensor_xxxxxxxxx
        to: 'on'
    action:
      service: ifttt.trigger
      data: {"event":"Sonoff_corr_on"}
  
script:
  timed_lamp:
    alias: "Turn on lamp and set timer"
    sequence:
      # Cancel ev. old timers
      - execute_service: script.turn_off
        service_data:
           entity_id: script.timer_off
      - execute_service: ifttt.trigger
        service_data: {"event":"Sonoff_corr_on"}
      # Set new timer
      - execute_service: script.turn_on
        service_data:
          entity_id: script.timer_off

  timer_off:
    alias: "Turn off lamp after 5 minutes"
    sequence:
      - delay:
          minutes: 5
      - execute_service: ifttt.trigger
        service_data: {"event":"Sonoff_corr_off"}