triggers with value template not triggering

[potent hearth]

I wanted to trigger action at specific time calculated before the actual input time. This logic is not triggering anything. What I am missing here? Can someone please help. Exact code is validated at developer tools.

HA Developer validation screenshot attached

Blueprint Code:

input:
  switch_off_at:
    name: "Switch off"
    default: '19:00:00'
    selector:
      time: {}
variables:
  switch_off_at: !input switch_off_at
triggers:
  # Should trigger 60 second before 'switch_off_at' time
  - platform: template
    value_template: >-
      {{ as_timestamp(now()) | int >= ((as_timestamp(now().strftime('%Y-%m-%d ' + switch_off_at)) | int) - 60) }}

actions:
  - action: script.reusable_notify_mobile_app
    data:
      notification_title: Aqua Test!
      notification_message: Triggered

[potent hearth]

Just figured out after the post. trigger is not reading variable values from variables section and it need same to be defined under trigger_variables

[lofty socket]

why are you using a template there? Just use a time trigger