Problem with script

[Volerix]

Hello, I have problem with that script:

local storage = 5648 

function onDeath(cid, corpse, deathList)
	if isMonster(cid) then
		if getCreatureMaster(cid) ~= cid then
			doCreatureSetStorage(getCreatureMaster(cid), storageLol, os.time() + 10)
		end
	end
	return true
end

When I kill monster, in console shows problem:

[Error- Creaturescript Interface]
data/creaturescripts/scripts/death.lua:onDeath
Description:
<luaDoCreatureSetStorage> Creature not found

What should I do? :/

 

[Amino12]

local storage = 5648 

function onDeath(cid, corpse, deathList)
	if isMonster(cid) then
		if isPlayer(getCreatureMaster (cid)) and getCreatureMaster(cid) ~= cid then
			doCreatureSetStorage(getCreatureMaster(cid), storage, os.time() + 10)
		end
	end
	return true
end