Detach.servo not working

ESPHome
1

Hi, can someone explain what im doign wrong here? i feel like im using this command correctly but it doesnt seem to do anyhting. i want the servo to go to its positon. wait 1s then remove power so its not locked up and creating heat. any advice?

captive_portal:
servo:
  - id: my_servo
    output: pwm_output
    auto_detach_time: 1s #not working????
    transition_length: 3s

# Example output platform

output:
  - platform: esp8266_pwm
    id: pwm_output
    pin: D4
    frequency: 50 Hz

number:
  - platform: template
    name: Servo Control
    min_value: -100
    max_value: 100
    step: 1
    set_action:
      then:
        - servo.write:
            id: my_servo
            level: !lambda 'return x/100;'
2

I need the same feature as yours. In case you resolved the issue, please kindly share. Thanks.