HarmonyOS 缩放动画问题

demo如下：

@Entry
@Component
struct Index {
  @State message: string = 'Hello World';
  @State x:number = 0.5
  @State y:number = 0.5
  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .borderWidth("2px")
          .borderColor(Color.Blue)
          .scale({x:this.x,y:this.y})
          .animation({
            duration: 1000,
            curve: Curve.EaseOut,
            iterations: 3,
            playMode: PlayMode.Normal
          })
          .onAppear(()=>{
            this.x = 1
            this.y = 1
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}