HarmonyOS 使用@builder和@builderParam时，@builder中的ui不会动态更新

@Observed 
class Tmp { 
  text: string = "Hello" 
} 
 
@Builder function customBuilder($$: Tmp) { 
  Column() { 
    Text($$.text) 
      .fontSize(50) 
  } 
} 
@Entry 
@Component 
struct BuilderTest { 
  @State message: string = 'Hello'; 
  @State tmp: Tmp = new Tmp() 
  build() { 
    Column() { 
      Text('change') 
        .fontSize(50) 
        .onClick(() => { 
          this.tmp.text = "Message" 
          this.message = "Message" 
        }) 
      // 无法修改 
      customBuilder(this.tmp) 
      // 可以修改 
      customBuilder({text: this.message}) 
    } 
    .height('100%') 
    .width('100%') 
  } 
}