HarmonyOS 自定义组建运行时错误，this指向有问题

@Entry  
@Component  
struct Index {  
  @State message: string = 'Hello World';  
  
  build() {  
    Row() {  
      Column() {  
        MyContainer(){  
          Parent({message: this.message})  
        }  
      }  
      .width('100%')  
    }  
    .height('100%')  
  }  
}

import { MyContainer } from './MyContainer';  
import { Parent } from './Parent';  
  
@Entry  
@Component  
struct Index {  
  @State message: string = 'Hello World';  
  @State message1: string = 'Hello';  
  build() {  
    Row() {  
      Column() {  
        MyContainer(){  
          Parent({message: this.message});  
          Parent({message: this.message1});  
        }  
      }  
      .width('100%')  
    }  
    .height('100%')  
  }  
}