http下载发布进度通知（NotificationRequest）问题

let title: string = ‘下载中’ 
let filename: string = ‘xxxxxx’ 
let progress: number = 21 
let template: notification.NotificationTemplate = { 
  name: ‘downloadTemplate’, 
  data: { 
    title: template-${title}, 
  fileName: template-${filename}, 
progressValue: progress, 
} 
}; 
 
let notificationRequest: notification.NotificationRequest = { 
  id: 1000, 
  template: template, 
  content: { 
    notificationContentType: notification.ContentType.NOTIFICATION_CONTENT_BASIC_TEXT, 
    normal: { 
      title: normal-${title}, 
    text: normal-${filename}, 
  additionalText: normal-${progress}% 
} 
} 
}; 
 
try { 
  notification.publish(notificationRequest).catch((err: Error) => { 
    hilog.error(0x0001, TAG, publishNotification failed, message is ${err}) 
}); 
} catch (e) { 
  hilog.error(0x0001, TAG, publishNotification exception, message is ${e}) 
}