Lua getCreatureStorageKey, own function, not work!

[Exedion]

I made this function to check if a player have a storage with certain key number, but not work and not send error msg...

function getCreatureStorageKey(cid, key)
local keys = getCreatureStorageList(cid)
	local c = table.find(keys, key)
	if(c == nil) then
		return false
	else
		return c, true
	end
end

 

[Cykotitan]

function getCreatureStorageKey(cid, key)
	local r = getCreatureStorage(cid, key)
	return r ~= -1 and r
end

 

[Exedion]

function getCreatureStorageKey(cid, key)
	local r = getCreatureStorage(cid, key)
	return r ~= -1 and r
end

this function only return the "value" of the storage "key"