$ref & $unref

import { GameObject, Rigidbody } from 'UnityEngine'
import { ZepetoScriptBehaviour } from 'ZEPETO.Script'
import TestScript from './TestScript';
 
export default class RefSample extends ZepetoScriptBehaviour {
 
    Start() {   
        // Get the GameObject named "Cube"
        const testObject = GameObject.Find("Cube");
         
        // Get the Rigidbody Component from the "Cube" Object
        const testComponent = GameObject.Find("Cube").GetComponent<Rigidbody>();
         
        // Get the TestScript Component from the "Cube" Object
        const testScript = GameObject.Find("Cube").GetComponent<TestScript>();
 
        // Create references to the components and object
        let tempObj = $ref(testObject);
        let tempComponent = $ref(testComponent);
        let tempScript = $ref(testScript);
 
        // Check if the Rigidbody component is not null
        if(tempComponent != null) {
            // Access the actual value of that reference
            let component = $unref(tempComponent);
            console.log(`Component Name : ${component}`);
        }
 
        // Check if the TestScript component is not null
        if(tempScript != null) {
            // Access the actual value of that reference
            let script = $unref(tempScript);
            script.DoTest();
        }
 
        // Check if the GameObject reference is not null
        if(tempObj != null) {
            // Access the actual value of that reference
            let objName = $unref(tempObj);
            console.log(`tempObj Name : ${objName.name}`);
        }
    }
}

import { ZepetoScriptBehaviour } from 'ZEPETO.Script'
 
export default class TestScript extends ZepetoScriptBehaviour {
 
    DoTest() {   
        console.log(`TestScript's DoTest() ถูกเรียกใช้งาน.`);
    }
}