Changeing scene by clicking on a gameobject

i use this script :

void Update()
if (Input.GetMouseButtonDown(0))
RaycastHit hit;
Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
if (Physics.Raycast(ray, out hit))
if (hit.collider.gameObject.tag == “Planet2”)

and i attach to the gameobject. And nothing happend when i click on the object

If you getting console messages from above comment then use

SceneManager.LoadScene ("Test0v1"); instead of Application.LoadLevel("Test0v1");