Event better! We can check the custom event is correct in a very similar way with a check like this:

```javascript
var value = event.detail.value;
assert.ok(customizationList['214-007'][setting], 'Unexpected event for setting ' + setting + '. It is not in the customization list');
assert.equal(value, customizationList['214-007'][setting], 'Value for setting ' + setting + '  does not match that in the customization list'.);
```
You can add this anywhere in the listener.