HarmonyOS @kit.NetworkKit http request错误

请以如下方法进行传参：

let http_request_task = http.createHttp();
let request_options: http.HttpRequestOptions = {
  method: http.RequestMethod.GET,
  header: {},
  extraData: { 'start': '0', 'limit': '20' },
  usingCache: false
}
http_request_task.request(
  "https://httpbin.org/get",
  request_options,
  (err, data) => {
    //.....
  }
)

需要注意value的值是字符串才能正常拼接在url上。