HarmonyOS 鸿蒙Next API12中的装饰器@Link,传参的装饰符是？

今天发现在API12中给@Link传参，之前一直是$，现在用this.也可以了？

DateComponent自定义组件中可以传以下两种

DateComponent({ selectedDate: this.parentSelectedDate })
DateComponent({ selectedDate: $parentSelectedDate })<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>

请问他俩有什么区别吗？

@Component
struct DateComponent {
@Link selectedDate: number;

build() {
Text(${<span class="hljs-keyword"><span class="hljs-keyword">this</span></span>.selectedDate})
}
}
@Entry
@Component
struct ParentComponent {
@State parentSelectedDate: number = 9;
build() {
Row() {
Button(Link修饰的值).onClick(() => {
this.parentSelectedDate = 99
})
DateComponent({ selectedDate: this.parentSelectedDate })
}
}
}<button style="position: absolute; padding: 4px 8px 0px; cursor: pointer; top: 8px; right: 8px; font-size: 14px;">复制</button>