View difference between Paste ID: nym0Ybhw and BuQpn8We

 local col = 0
 
 function getItems(invName)
   --print('Checking '..invName)
   inv = peripheral.wrap(invName)
 
   if(inv.getInventorySize()) then
     invSize = inv.getInventorySize()
     contents = {}
 
     i = 1
     while i<=invSize do
       if inv.getStackInSlot(i) then
         thisStack = inv.getStackInSlot(i)
         thisName = thisStack["name"]
         if contents[thisName] then
-          print(contents[thisName]["qty"])
+          print("thisName:"..thisName)
 	  print("contents:"..contents[thisName])
 	  contents[thisName] = tonumber(contents[thisName]["qty"])+tonumber(thisStack["qty"])
         else
           contents[thisName] = tonumber(thisStack["qty"])
         end
       end
       i=i+1
     end
 
     return contents
   else
     return false
   end
 end
 
 function getTrade(tradeName)
   trade = priperhal.wrap(tradeName)
   trade = {}
 
   --Ensure it exists
   if(trade.getInventorySize()) then
     want = trade.getStackInSlot(1)
     trade["want"]["name"] = want["name"]
     trade["want"]["qty"] = want["qty"]
 
     offer = trade.getStackInSlot(2)
     trade["offer"]["name"] = offer["name"]
     trade["offer"]["qty"] = offer["qty"]
   end
   return trade
 end
 
 function drawTrade(id,trade,inv)
 
 
 end
 
 function monSetPos()
   x,y = mon.getCursorPos()
   if(y>37) then
     col= col+1
     y=0
     monInc()
   end
 end
 
 function monInc()
   x,y = mon.getCursorPos()
   mon.setCursorPos(col*18+1,y+1)
 end
 
 local invs = {}
 local trades = {}
 local i = 1
 local j = 1
 --Get inventories and trade o mats and monitor
 for k,v in pairs(peripheral.getNames()) do
   if string.match(v,'iron') then
     invs[i] = v
     i = i+1
   end
   if string.match(v,'trade') then
     trades[j] = v
     j = j+1
   end
   if string.match(v,'monitor') then
     mon = peripheral.wrap(v)
     mon.setTextScale(0.5)
     mon.setCursorPos(1,1)
     mon.clear()
   end
 end
 
 table.sort(invs)
 table.sort(trades)
 data = {}
 --Combine into mega table
 for k,v in pairs(invs) do
   data[k] = {}
   data[k]["inv"] = v
   data[k]["trade"] = trades[i]
 end
 
 col = 0
 for k,v in pairs(data) do
   inv = v["inv"]
   trade = v["trade"]
   items = getItems(inv)
   if(items) then
     monSetPos()
     mon.write('Chest '..k)
     monInc()
     for i,j in pairs(items) do
       mon.write(i..' x'..j)
       monInc()
     end
   end
 end
 
 for k,v in pairs(trades) do
   monSetPos()
   mon.write(k..':'..v)
   monInc()
 end