local tpPosition = {x = 100, y = 100, z = 7}
local validPositions = {{x = 200, y = 200, z = 7}, {x = 300, y = 300, z = 7}}
function onThink(interval, lastExecution, thinkInterval)
local oldTeleport = getTileItemByType(tpPosition, ITEM_TYPE_TELEPORT)
if oldTeleport.uid == 0 then...