UI Button Change Scene with Game Controller from a Mobile Device

Hello everyone,

I am trying to do user interface... i want to control my Pc Application which is made by unity with my phone application which is made by unity again... when i press the ui button i want to change the scene on pc application.

but there are several problems. i managed to connect server with my phone, but UI buttons not works.

i know there should be Networkserver and networkclient scripts..

here is NetworkServer code

 using System;
 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine.Networking;
 using UnityEngine.Networking.NetworkSystem;
 using UnityStandardAssets.CrossPlatformInput;
 using UnityEngine;
 
 
 public class NetworkServerUI : MonoBehaviour {
 
     private void OnGUI()
     {
         string ipaddress = Network.player.ipAddress;
         GUI.Box(new Rect(10, Screen.height - 50, 100,50), ipaddress);
         GUI.Label(new Rect(20, Screen.height - 35, 100, 20), "Status:" + NetworkServer.active);
         GUI.Label(new Rect(20, Screen.height - 20, 100, 20), "Connected:" + NetworkServer.connections.Count);
     }
     // Use this for initialization
     void Start () {
         NetworkServer.Listen(25000);
 
     }
     
     // Update is called once per frame
     void Update () {
         
     }
 }

Here is client code;

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine.Networking;
 using UnityEngine.Networking.NetworkSystem;
 using UnityEngine;
 
 public class NetworkClientUI : MonoBehaviour {
 
     NetworkClient client;
     void OnGUI()
     {
         string ipaddress = Network.player.ipAddress;
         GUI.Box(new Rect(10, Screen.height - 50, 100, 50), ipaddress);
         GUI.Label(new Rect(20, Screen.height - 30, 100, 20), "Status:" + client.isConnected);
 
         if(!client.isConnected)
         {
             if(GUI.Button(new Rect(10,10,60,50),"Connect"))
             {
                 Connect();
             }
         }
     }
     // Use this for initialization
     void Start () {
         client = new NetworkClient();
     }
     void Connect()
     {
         client.Connect("192.168.1.7", 25000);
     }
     // Update is called once per frame
     void Update () {
         
     }
 }

here is change scene code;

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class ChangeScene : MonoBehaviour {
 
 
     public void ChangeToScene (string sceneName)
     {
         Application.LoadLevel(sceneName);
     }
 }

Please help me...