gistfile1.cs

using UnityEngine;
using System.Collections;

public class cubeScript : MonoBehaviour
{
		// Use this for initialization
		void Start ()
		{
	
		}
		// Update is called once per frame
		void Update ()
		{
	
		}

		public void bigsize ()
		{
				this.transform.localScale = new Vector3 (3.0f, 3.0f, 3.0f);
		}
}

public class Test
{
		public void makeBigMyself(GameObject obj){
				obj.transform.localScale = new Vector3(3.0f,3.0f,3.0f);
		}
}