Please read the post carefully, you will see: "data/creaturescripts/scripts/login.lua". And I've edited the post. Use the new version of my script.
if getCreatureStorage(cid, 8825) ~= -1 then
doCreatureSetStorage(cid, 8825, -1)
print('8825: '..getCreatureStorage(cid, 8825))
end
/edit Does it...