Can not get simple IFTTT trigger and action working

I want to setup a trigger to IFTTT from HA. In theory I have set it up but it is failing and I can not see any errors anywhere.

In configuration.yaml:

# IFTTT
ifttt:
  key: **my_key**

In automation.yaml:

- alias: Test
  trigger:
  - entity_id: device_tracker.iphone
    from: 'home'
    platform: state
  condition: []
  action:
  - data: {"event":"EventName", "value1": "Hello World"}
    service: ifttt.trigger

Fixed it!
I was being stupid and did not notice the event text (in this case “EventName”) was not matched in the IFTTT applet.
Changed it to match and all sorted.