HarmonyOS如何实现自定义dialog多次弹出并显示不同内容？

import promptAction from '@ohos.promptAction'  
let map:Map<number,number> = new Map();  
@Builder  
function customDialogBuilder(dialogTxt:string,index:number) {  
  TestDialog({ dialogTxt: dialogTxt,index:index })  
}  
@Component  
struct TestDialog {  
  @State dialogTxt: string = ''  
  @State index: number = 0  
  build() {  
    Column() {  
      Text(this.dialogTxt).fontSize(10)  
      Row() {  
        Blank().width(50)  
        Button("取消").onClick(() => {  
          promptAction.closeCustomDialog(map.get(this.index))  
          map.delete(this.index)  
        })  
      }  
    }.height(200).padding(5)  
  }  
}  
@Entry  
@Component  
struct Index {  
  @State message: string = 'Hello World'  
  @State dialogTxt:string = '弹窗文本'  
  build() {  
    Row() {  
      Column() {  
        Text(this.message)  
          .fontSize(50)  
          .fontWeight(FontWeight.Bold)  
          .onClick(() => {  
              for (let index = 0; index < 3; index++) {  
                promptAction.openCustomDialog({  
                  builder: customDialogBuilder.bind(this,this.dialogTxt+index,index),  
                  showInSubWindow:true,  
                }).then((dialogId: number) => {  
                  map.set(index,dialogId)  
                })  
              }  
          })  
      }  
      .width('100%')  
    }  
    .height('100%')  
  }  
}