HarmonyOS @Component切换按钮替换数据，应该怎么实现

参考demo：

class Model {
  public value: string
  constructor(value: string) {
    this.value = value
  }
}
@Entry
@Component
struct EntryComponent {
  build() {
    Column() {
      MyComponent({ count: 1, increaseBy: 2 })
        .width(300)
      MyComponent({ title: new Model('Hello World 2'), count: 7 })
    }
  }
}
@Component
struct MyComponent {
  @State title: Model = new Model('Hello World')
  @State count: number = 0
  private increaseBy: number = 1
  build() {
    Column() {
      Text(`${this.title.value}`)
        .margin(10)
      Button(`Click to change title`)
        .onClick(() => {
          this.title.value = this.title.value === 'Hello ArkUI' ? 'Hello World' : 'Hello ArkUI'
        })
        .width(300)
        .margin(10)
      Button(`Click to increase count = ${this.count}`)
        .onClick(() => {
          this.count += this.increaseBy
        })
        .width(300)
        .margin(10)
    }
  }
}
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