getTileItemById

if getTileItemById(pos, 460) then
    doTeleportThing(cid, pos, false)
    doSendMagicEffect(pos, 10)
    doCreatureSay(cid, r.text, 19)
    return doAddCondition(cid, thisCondition)
else

local t =   {
	[7440] = {outfit='mew', outfitn='rat', text='Fly, mew!', dtext='Go down, mew!'}
}       
local thisCondition = createConditionObject(CONDITION_OUTFIT)
setConditionParam(thisCondition, CONDITION_PARAM_TICKS, 1800 * 1000)
addOutfitCondition(thisCondition, {lookType = 354, lookHead = 0, lookBody = 0, lookLegs = 0, lookFeet = 0})
function onUse(cid, item, fromPosition, itemEx, toPosition)
	local v, r, s = getCreaturePosition(cid), t[item.itemid], 100
	local pos = {x = v.x, y = v.y, z = 6}
	local posd = {x = v.x, y = v.y, z = 7}
	if r then
		if v.z == 7 then
			if getTileItemById(pos, 460).uid > 0 then
				if doTeleportThing(cid, pos, false) then
					doSendMagicEffect(pos, 10)
					doCreatureSay(cid, r.text, 19)
					return doAddCondition(cid, thisCondition)
				else
					return doPlayerSendCancel(cid, 'You can\'t fly here.')
				end    
			else
				return doPlayerSendCancel(cid, 'You can\'t fly here.')
			end
		elseif v.z == 6 then
			if doTeleportThing(cid, posd, false) then
				doSendMagicEffect(posd, 10)
				doCreatureSay(cid, r.dtext, 19)
				return doRemoveCondition(cid, CONDITION_OUTFIT)
			else
				return doPlayerSendCancel(cid, 'You can\'t land here.')
			end
		else
			return doPlayerSendCancel(cid, 'You can\'t fly here.')
		end
	else
		return doPlayerSendTextMessage(cid,MESSAGE_STATUS_CONSOLE_BLUE, 'There has been some error, try contacting a staff member.')
	end
end

You must spread some Reputation around before giving it to Xeon again.