Set Work List status of a Task via api

When a task is created by the api, it's not possible to set the value of the Work List status. This means that if one is connecting a task app to DL (eg Apple Reminders) you can't see tasks in those apps until you manually enter DL and click the pin icon to add to the Work List. This seems a curiously retrograde step when everything about the task has been created by the API. Given the status as in the Work List is set in DL, but persists across to iOS, it's clearly a field which exists in the server, and should be able to be read and written by the api.