public void ButtonGuard()
{
upgrade = true;
myInstance.SetActive(false);
GameObject[] tabGuard = gm.GetTabGuard();
int[] guardActive = gm.GetActiveGuard();
for (int i = 0; i < tabGuard.Length; i++)
{
if (guardActive[i] == 0)
{
tabGuard [i].GetComponent <SpriteRenderer> ().color = new Color(1f, 1f, 1f, .5f);
tabGuard[i].SetActive(true);
}
}
}