void Update()
{
    if (lives <= 0 && canLose == true) {   
        plost.SetActive (true);
        lostbool = true;
    if (Advertisement.IsReady ("rewardedVideo")) {
        Advertisement.Show ("rewardedVideo");
    }
        canLose = false;
}

void OnMouseDown(){
    Camera.main.GetComponent<cameraRotation>().target = transform;
}

Instantiate(gameobject, point.position, Quaternion.identity);