diff --git a/productionboard/src/main/java/com/productionboard/controller/TankShellDeviceController.java b/productionboard/src/main/java/com/productionboard/controller/TankShellDeviceController.java
index 202dd3e..d6547ad 100644
--- a/productionboard/src/main/java/com/productionboard/controller/TankShellDeviceController.java
+++ b/productionboard/src/main/java/com/productionboard/controller/TankShellDeviceController.java
@@ -59,6 +59,12 @@ public class TankShellDeviceController {
                 jsonObjectList.add(jsonObject);
             });
         }
+        for (int i = 0;i<5;i++){
+            JSONObject jsonObject = new JSONObject();
+            jsonObject.put("name",i);
+            jsonObject.put("value",i);
+            jsonObjectList.add(jsonObject);
+        }
         String s = JSONArray.toJSONString(jsonObjectList);
         return s;
     }
diff --git a/productionboard/target/classes/com/productionboard/controller/TankShellDeviceController.class b/productionboard/target/classes/com/productionboard/controller/TankShellDeviceController.class
index c5db8d5..f263ecc 100644
Binary files a/productionboard/target/classes/com/productionboard/controller/TankShellDeviceController.class and b/productionboard/target/classes/com/productionboard/controller/TankShellDeviceController.class differ