How to use a telegram command value in the action of an automation?

How can I use the telegram command payload in the action. Here: In Telegram I send the delay to be set as /<delay in minutes>. I wrote automations for specific values. How to allow any value in the command and use it in the action?

- id: '234987446085'
  alias: telegram turn on pump after 30 minutes
  trigger:
  - platform: event
    event_type: telegram_command
    event_data:
      command: /30
  condition: []
  action:
  - wait_for_trigger: []
    timeout:
      hours: 0
      minutes: 30
      seconds: 0
      milliseconds: 0
  - service: switch.turn_on
    data: {}
    target:
      entity_id: switch.pump
  mode: single