Can anyone help me with this error?


LUA:
local levers = {
{leverPos = {x = 33515, y = 31444, z = 13}, teleportTo = Position({x = 33489, y = 31441, z = 13}), bossName = "Earl Osam", bossPos = Position({x = 33488, y = 31435, z = 13})},--Cormaya
{leverPos = {x = 33454, y = 31413, z = 13}, teleportTo = Position({x = 33457, y = 31442, z = 13}), bossName = "Count Vlarkorth", bossPos = Position({x = 33457, y = 31433, z = 13})},--Edron
{leverPos = {x = 33421, y = 31493, z = 13}, teleportTo = Position({x = 33425, y = 31480, z = 13}), bossName = "Lord Azaram", bossPos = Position({x = 33425, y = 31466, z = 13})},--Ghostland
{leverPos = {x = 33423, y = 31413, z = 13}, teleportTo = Position({x = 33425, y = 31431, z = 13}), bossNames = {"Sir Baeloc", "Sir Nictros"}, bossPos = {Position({x = 33422, y = 31428, z = 13}), Position({x = 33427, y = 31428, z = 13})}},--Darashia
{leverPos = {x = 33454, y = 31493, z = 13}, teleportTo = Position({x = 33456, y = 31477, z = 13}), bossName = "Duke Krule", bossPos = Position({x = 33456, y = 31468, z = 13})}--Thais
}
local function StartBattle(bossPos)
local boss = Tile(bossPos):getTopCreature()
if boss and boss:isMonster() then
boss:teleportTo(Position({x = 33427, y = 31436, z = 13}))
end
end
local lever = Action()
function lever.onUse(player, item, fromPosition, target, toPosition, isHotkey)
for b = 1, #levers do
if item:getPosition() == Position(levers[b].leverPos) then
for c = levers[b].leverPos.x + 1, levers[b].leverPos.x + 5 do
local adventurers = Tile(Position(c, levers[b].leverPos.y, levers[b].leverPos.z)):getTopCreature()
if adventurers and adventurers:isPlayer() then
adventurers:teleportTo(levers[b].teleportTo)
end
end
if levers[b].bossNames then
Game.createMonster(levers[b].bossNames[1], levers[b].bossPos[1]):registerEvent("SirBaelocThink")
Game.createMonster(levers[b].bossNames[2], levers[b].bossPos[2]):registerEvent("SirNictrosThink")
addEvent(StartBattle, 15 * 1000, levers[b].bossPos[2])
else
Game.createMonster(levers[b].bossName, levers[b].bossPos)
end
end
end
return true
end
for a = 1, #levers do
lever:position(levers[a].leverPos)
end
lever:register()