uniapp 调用iOS客户端异步方法获取返回值 undefined

HBudilderX：
this.manager.plusSetAttribute("lestenerCallBack",(ret) => {
console.log("lestenerEvent = " + ret);
});
iOS客户端：
EventManager *manager = [EventManager sharedEventManager];
if (manager.lestenerCallBack != nil){
manager.lestenerCallBack(@"123",true);
}