Multiple item workOrder work

src/engine/gameManager/ForgeManager.java

@@ -175,7 +175,7 @@ public enum ForgeManager implements Runnable {
 
         // Single item rolls are msg_size of 0;
 
-        if (workOrder.slots_used > 0 && workOrder.msg_size == 0)
+        if (workOrder.slots_used > 0 && workOrder.multiple_slot_request == 0)
             availableSlots = 1;
 
         return availableSlots;