Bugfix in update_value

src/engine/db/handlers/dbItemHandler.java

@@ -554,7 +554,7 @@ public class dbItemHandler extends dbHandlerBase {
 
         // Write 0 if we will not modify the value from template
 
-        if (item.value == item.template.item_value)
+        if (value == item.template.item_value)
             value = 0;
 
         try (Connection connection = DbManager.getConnection();