Selet下拉组件如何让默认选中项为坐标为1的值？

@Entry
@Component
struct Index {
  @State currentIndex: number = 1

  build() {
    Column() {
      Select([{ value: "aaaa", icon: $r("app.media.app_icon") },
        { value: "bbbb", icon: $r("app.media.app_icon") }
        , { value: "cccc", icon: $r("app.media.app_icon") }])
        .selected(this.currentIndex) //选中的选项的坐标
    }
    .width('100%')
    .height('100%')
    .justifyContent(FlexAlign.Center)
  }
}