function onUse(player, item, fromPosition, target, toPosition, isHotkey)
	-------------------------------------------
	-- Config
	-------------------------------------------
	local exhaustStorage = 2017 -- This storage is used for the cooldown.
	local config = {
		["manaRune"] = {
			itemId = 2275, --Set the item id here.
			effect = CONST_ME_HOLYDAMAGE, -- Set the effect here
			cooldown = 1, -- Set the exhaust time here. (1 = 1 second)
			allowedVocs = {1, 2, 5, 6},
			formulas = {
				-- Set the min and max values here.
				min = player:getLevel() * (1.4) + player:getMagicLevel() * (1.6) + 400,
				max = player:getLevel() * (1.4) + player:getMagicLevel() * (1.6) + 750,
			},
		},
		["healthRune"] = {
			itemId = 2297,
			effect = CONST_ME_HOLYDAMAGE,
			cooldown = 1,
			allowedVocs = {4, 8} ,
			formulas = {
				min = math.ceil(player:getLevel() * (1.4) + player:getMagicLevel() * (1.65) + 450),
				max = math.ceil(player:getLevel() * (1.4) + player:getMagicLevel() * (1.65) + 750),
			},
		},
		["paladinRune"] = {
			itemId = 2300,
			effect = CONST_ME_HOLYDAMAGE,
			cooldown = 1,
			allowedVocs = {3, 7},
			formulas = {
				min = player:getLevel() * (1.4) + player:getMagicLevel() * (1.5) + 400,
				max = player:getLevel() * (1.4) + player:getMagicLevel() * (1.5) + 750,
			},
		},
	}

	-------------------------------------------
	-- Script
	-------------------------------------------
	if player:getExhaustion(exhaustStorage) > 0 then
		player:getPosition():sendMagicEffect(CONST_ME_POFF)
		player:sendTextMessage(MESSAGE_STATUS_DEFAULT, "You are exhausted." )
		return true
	end

	local rune
	for k,v in pairs(config) do
		if item:getId() == v.itemId then
			rune = k
		end
	end

	if rune == nil then
		print("Rune ID not found in confg")
		return true
	end


	local settings = config[rune]
	local amount = math.random(settings.formulas.min, settings.formulas.max)
	local playerVoc = player:getVocation():getId()

	if rune == "manaRune" then
		if table.contains(settings.allowedVocs, playerVoc) then
			player:say('+'..amount.."mp", TALKTYPE_MONSTER_SAY)
			player:addMana(amount)
			player:getPosition():sendMagicEffect(settings.effect)
		else
			player:getPosition():sendMagicEffect(CONST_ME_POFF)
			player:sendTextMessage(MESSAGE_STATUS_DEFAULT, "You cannot use this rune." )
			return true
		end

	elseif rune == "healthRune" then
		if table.contains(settings.allowedVocs, playerVoc) then
			player:say('+'..amount.."hp", TALKTYPE_MONSTER_SAY)
			player:addMana(amount)
			player:getPosition():sendMagicEffect(settings.effect)
		else
			player:getPosition():sendMagicEffect(CONST_ME_POFF)
			player:sendTextMessage(MESSAGE_STATUS_DEFAULT, "You cannot use this rune." )
			return true
		end

	elseif rune == "paladinRune" then
		if table.contains(settings.allowedVocs, playerVoc) then
			player:say('+'..amount.."mp", TALKTYPE_MONSTER_SAY)
			player:say('+'..amount.."hp", TALKTYPE_MONSTER_SAY)
			player:addMana(amount)
			player:addHealth(amount)
			player:getPosition():sendMagicEffect(settings.effect)
		else
			player:getPosition():sendMagicEffect(CONST_ME_POFF)
			player:sendTextMessage(MESSAGE_STATUS_DEFAULT, "You cannot use this rune." )
			return true
		end
	end

	player:setExhaustion(exhaustStorage, settings.cooldown)
	return true
end