Script De Refinamento

[10/7/2018 11:0:35] [Error - Action Interface] 
[10/7/2018 11:0:35] data/actions/scripts/refine.lua:onUse
[10/7/2018 11:0:35] Description: 
[10/7/2018 11:0:35] data/actions/scripts/refine.lua:5: attempt to index global 'Refine' (a nil value)
[10/7/2018 11:0:35] stack traceback:
[10/7/2018 11:0:35]     data/actions/scripts/refine.lua:5: in function <data/actions/scripts/refine.lua:1>

function onUse(cid, item, fromPosition, itemEx, toPosition)

if not isCreature(itemEx.uid) then

local Obj = Refine:load(itemEx)

if Obj ~= false then

local oldLevel = Obj:getLevel()

Obj:upgrade(cid, item)

if Obj:getLevel() > oldLevel then

doSendMagicEffect(toPosition, CONST_ME_MAGIC_GREEN)

else

doSendMagicEffect(toPosition, CONST_ME_POFF)

end

else

doPlayerSendDefaultCancel(cid, RETURNVALUE_NOTPOSSIBLE)

end

else

doPlayerSendDefaultCancel(cid, RETURNVALUE_NOTPOSSIBLE)

end

return true

end