// Fill the Upgrade Panel UI with the Upgrade Unit stats
private void PopulateWithUpgradeUnitStats()
{
upgradeDefenderPreview.sprite = upgradeUnit.GetComponentInChildren <SpriteRenderer>().sprite;
unitName.text = upgradeUnit.GetUnitName();
unitCost.text = upgradeUnit.GetUnitPrice().ToString();
unitHealth.text = "Health: " + upgradeUnit.GetUnitHealth().ToString();
unitDamage.text = "Damage: " + upgradeUnit.GetUnitDamage().ToString();
unitAbility.text = "Ability: " + upgradeUnit.GetAbilityDescription();
}