What's wrong with this code. It won't start the mower and override the schedule

[janstolte]

I've been pulling my hair out (if any...) to create a button that overrides the schedule for 3 hours and starts mowing.
This is the code I'm using in the button:

tap_action:
  action: call-service
  service: husqvarna_automower.custom_command
  service_data:
    command_type: actions
    json_string: |-
      { "data": {
        "type": "Start",
        "attributes": {
          "duration": 180
        }
      }
    entity_id: vacuum.otto

If I replace the data part in the json_string with ResumeSchedule, the button works just fine and the mower resumes as per the schedule.
For what it's worth: no error messages at all, so it seems to eat the command just fine, but no action unfortunately.

[Thomas55555]

What if you write something else the Start, e.g. Dart - do you get than an error message?
Have you considered this?
NOTE: If you send a start command, Automower® will not leave the charging station until it is fully charged.

[janstolte]

I replaced Start with Fart and it did not throw an error.
Strange...

[Thomas55555]

This worked for me:

service: husqvarna_automower.custom_command
data:
  command_type: actions
  json_string: |-
    { "data": {
          "type": "Start",
          "attributes": {
            "duration": 60
          }
        }
        }
target:
  entity_id: vacuum.haffi

You missed a }

[janstolte]

Poor me... couldn't even count to three twice... ;)

[Thomas55555]

Or even easier:

service: number.set_value
data:
   value: "180"
target:
   entity_id: number.otto_mow_for

[janstolte]

Cool! The shorter code, the better