check SAFEBOX space?

[kimameixede 6]

Hello!

i need something in quest/lua to check if the space in safebox have item.

if have put the new item in the next free space.

 

i try something like this:

local pos = mysql_query("SELECT * FROM player.item WHERE window='SAFEBOX' and owner_id='"..pc.get_account_id().."' ORDER BY pos ASC")
 local i = 0
if pos.pos!= nil then
repeat
i = i + 1
until (tonumber(pos.pos))!=(i-1)
pos = i-1
else
 pos = 0
end

but unfortuly dont work.

someone can give help?