Remove old Tree

[bomba]

Help:
Error:

--_--_--_--_--_--_--_--_--
Script:

function onUse(cid, item, frompos, item2, topos)
wall1 = {x=356, y=351, z=9, stackpos=1}
wall2 = {x=359, y=596, z=10, stackpos=1}
getwall1 = getThingfromPos(wall1)
getwall2 = getThingfromPos(wall2)

if item.uid == 7000 and item.itemid == 1945 then
doRemoveItem(getwall1.uid,1)
doRemoveItem(getwall2.uid,1)
doTransformItem(item.uid,item.itemid+1)
elseif item.uid == 7000 and item.itemid == 1946 then
doTransformItem(item.uid,item.itemid-1)
else
doPlayerSendCancel(cid,"Sorry, not possible.")
end

return 1
end

I use Forgotten Serv.

 

[Master-m]

It says that one of these tiles don't exist.
wall1 = {x=356, y=351, z=9, stackpos=1}
wall2 = {x=359, y=596, z=10, stackpos=1}