Solved ERROR CREATURESCRIPTS Elemental Spheres Quest

Lua Script Error: [CreatureScript Interface]
data/creaturescripts/scripts/elemental spheres quest/the_elemental_spheres.lua:onDeath
...cripts/elemental spheres quest/the_elemental_spheres.lua:14: attempt to index local 't' (a nil value)
stack traceback:
        [C]: in function '__index'
        ...cripts/elemental spheres quest/the_elemental_spheres.lua:14: in function <...cripts/elemental spheres quest/the_elemental_spheres.lua:9>

local boss = {
    ["fire overlord"] = {g_storage = 40064, p_storage = 60027},
    ["energy overlord"] = {g_storage = 40065, p_storage = 60028},
    ["ice overlord"] = {g_storage = 40066, p_storage = 60029},
    ["earth overlord"] = {g_storage = 40067, p_storage = 60030},
}


function onDeath(cid, corpse, lasthitkiller, mostdamagekiller, lasthitunjustified, mostdamageunjustified)
    local pid = Player(mostdamagekiller)

    local t = boss[Creature(cid):getName():lower()]

    Player(pid):setStorageValue(t.p_storage, 1)
    setGlobalStorageValue(t.g_storage, -1)

    return true
end


function onKill(cid, target)
    if Creature(target):getName():lower() == "lord of the elements" then
        Player(cid):setStorageValue(60031, 1)
    end

    return true
end

function onLogin(cid)
    Player(cid):registerEvent("ElementalSpheresKill")
    return true
end