HarmonyOS 鸿蒙Next @proviede、@consume什么情况?官方不支持了？

HarmonyOS 鸿蒙Next @proviede、@consume什么情况?官方不支持了？ 官方文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V2/arkts-provide-and-consume-0000001473857338-V2

import xuling from '../../../MYyuanji/xuling'
import router from '@ohos.router';
@Entry
@Component
struct Cs003 {
  @State message: string = 'Hello World'
  @Provide('nm') kk:number = -1;

  private canshu;

  aboutToAppear(){
    this.message = '99999'
    let sj = router.getParams();
    this.canshu = sj['lll'];
  }

  build {
    ColumnSplit(){
      Text(this.message)
        .fontSize(50)
        .height(50)

      Button(`${this.kk}`)
        .fontSize(50)
        .height(50)
        .width(70)
        .onClick(() => {
          // console.log(JSON.stringify(this.canshu()))
        })

      lllll({
        ll:this.kk
      })
        .width('100%')
        .height('100%')

    }
    .height('100%')
    .resizeable(true)
  }
}

@Component
export struct lllll{
  @State ll:number = 0;

  build{}
}

报错截图

请问是我用法不对？？？

deveco版本:

DevEco Studio 3.1 Release
构建版本：3.1.0.500, built on April 28, 2023
Build #DS-223.8617.56.36.310500
Runtime version: 17.0.5+1-b653.25 amd64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Windows 10 10.0
GC: G1 Young Generation, G1 Old Generation
Memory: 1536M
Cores: 24
Registry:
   external.system.auto.import.disabled=true