UNET Documentation

https://unity3d.com/ru/learn/tutorials/topics/multiplayer-networking/networking-player-health

Missed assigning of the SyncVar value in the hook

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using UnityEngine.Networking;
4. using System.Collections;
5.  
6. public class Health : NetworkBehaviour {
7.  
8.     public const int maxHealth = 100;
9.  
10.     [SyncVar(hook = "OnChangeHealth")]
11.     public int currentHealth = maxHealth;
12.  
13.     //  
14.  
15.     void OnChangeHealth (int health)
16.     {
17.         healthBar.sizeDelta = new Vector2(health, healthBar.sizeDelta.y);
18.     }
19. }

should be

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using UnityEngine.Networking;
4. using System.Collections;
5.  
6. public class Health : NetworkBehaviour {
7.  
8.     public const int maxHealth = 100;
9.  
10.     [SyncVar(hook = "OnChangeHealth")]
11.     public int currentHealth = maxHealth;
12.  
13.     //
14.  
15.     void OnChangeHealth (int health)
16.     {
17.         currentHealth = health; // fix
18.         healthBar.sizeDelta = new Vector2(health, healthBar.sizeDelta.y);
19.     }
20. }

 

Thanks! Will pass to the Learn team.