Lua Item losing power (need charge). Help please :>

[Zielas92]

Item losing power (need charge). Help please :>

Hi.
I mean items adding % to max mana and hp. I would like to after use losing power and one must charge them, on example at npc. Sorry for my english. ;d

This is my script for item adding % to max mana:

local vocations = {191, 179, 182, 203, 197, 206, 209, 212, 185, 200, 227, 239, 194, 188, 251, 264, 6, 12, 18, 24, 30, 36, 42, 48, 63, 74, 81, 171, 220, 232, 244, 257}
local manaPercent = 15 --- How many % MP add! 
local time = 900 -- time in seconds
local storage = 40061 -- Must be unused!
 
local combat = createCombatObject()
setCombatParam(combat, COMBAT_PARAM_AGGRESSIVE, false)
 
local addmana = createConditionObject(CONDITION_ATTRIBUTES)
setConditionParam(addmana, CONDITION_PARAM_BUFF, true)
setConditionParam(addmana, CONDITION_PARAM_SUBID, 1)
setConditionParam(addmana, CONDITION_PARAM_STAT_MAXMANAPERCENT, 100 + manaPercent) 
setConditionParam(addmana, CONDITION_PARAM_TICKS, time * 1000)
setCombatCondition(combat, addmana)
 
function remove(cid)
	if not isPlayer(cid) then
		return true
	end
	doPlayerSendTextMessage(cid, 23, "Bonus Ki is time out!")
end
 
function onUse(cid, item)
	if isInArray(vocations, getPlayerVocation(cid)) then 
		if exhaustion.get(cid, storage) == FALSE then
			doCombat(cid, combat, numberToVariant(cid))  
			doCreatureSay(cid, "Yeeeah, Bonus Ki!!!\nFeel the power!", 19)
			doSendMagicEffect(getCreaturePosition(cid), 133)
			addEvent(remove,time*1000, cid)
			exhaustion.set(cid, storage, time)
		else
			doPlayerSendCancel(cid, "Sorry, you only can again use this item after " .. exhaustion.get(cid, storage) .. " seconds.")	
		end	
	else
		doPlayerSendCancel(cid, "Sorry, you must be on last transform!")	
	end
	return TRUE 
end

I will be very grateful for help. Thanks ;p

- - - Updated - - -

~Refresh~

Help, this is important to me to this item it was necessary to charge at npc.