Microsoft Graph API: properti tugas (plannerAssignment) dari Sumber Daya Tugas (plannerTask ) tidak berfungsi

Hai, saya membuat permintaan posting ke grafik api (Beta) untuk membuat tugas dengan penerima tugas sebagai berikut.

var settings = {
  "async": true,
  "crossDomain": true,
  "url": "https://graph.microsoft.com/beta/planner/tasks",
  "method": "POST",
  "headers": {
    "content-type": "application/json",
    "authorization": "Bearer token",
    "cache-control": "no-cache",
    "postman-token": "f6dd56ab-6fb4-f553-74aa-792945ba98b6"
  },
  "data":  {"title": "testTask","planId": "rPWMLzwXlUOA33dPNU9-dWUAAoRf,  "assignments": {"7d0544e0-2ed9-4aab-92a0-38efcaa292cd": {"orderHint": '5637'    } } }
}

$.ajax(settings).done(function (response) {
  console.log(response);
});

Tapi itu memberikan Error sebagai berikut,

{
  "error": {
    "code": "",
    "message": "The request is invalid.",
    "innerError": {
      "request-id": "14a2ef00-a271-4be8-8197-71aa46379017",
      "date": "2017-04-18T11:29:42"
    },
    "innererror": {
      "message": "task : An error has occurred.\r\n"
    }
  }
}

Tautan sumber daya tugas: https://developer.microsoft.com/en-us/graph/docs/api-reference/beta/resources/plannertask