Sell inventory get negative uid

src/engine/db/handlers/dbContractHandler.java

@@ -12,8 +12,8 @@ package engine.db.handlers;
 import engine.Enum;
 import engine.gameManager.DbManager;
 import engine.objects.Contract;
-import engine.objects.ItemTemplate;
 import engine.objects.Item;
+import engine.objects.MobLoot;
 import org.pmw.tinylog.Logger;
 
 import java.sql.Connection;
@@ -65,8 +65,9 @@ public class dbContractHandler extends dbHandlerBase {
 
                 int templateID = rs.getInt("itembaseID");
 
-                Item me = new Item(templateID);
+                Item item = new Item(templateID);
-                contract.getSellInventory().add(me);
+                item.objectUUID = MobLoot.lastNegativeID.decrementAndGet();
+                contract.getSellInventory().add(item);
 
             }
         } catch (SQLException e) {