HarmonyOS 线程中使用AppStorage报错ReferenceError: AppStorage is not defined

let task = new taskpool.Task(test2, 1);
taskpool.execute(task).then(() => {

}).catch((error: Error) => {
  console.error("error:" + error)
})
@Concurrent
function test2(a: number) {
  let n:number = a;
  console.info("sendable: taskpool count is:");
  AppStorage.setOrCreate("xxx", 1111);
}

报错：

E     [default] CallForNapi:3043 occur exception need return
E     [(native_api.cpp:1205)(napi_call_function)] pending exception when js function called, print exception info:
E     ReferenceError: AppStorage is not defined
E         at test2 (entry|entry|1.0.0|src/main/ets/pages/Index.ts:133:5)
E     [(worker.cpp:555)(HandleFunctionException)] taskpool::PerformTask occur exception