UI element binding not working anymore

Hello,

I did a binding with a Boss health bar and a UI Elements yesterday. It was working yesterday, I didn't change anything and today it's not working.

Script on my Game object in game "BossHealth.cs":

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using System;
5.  
6. [System.Serializable]
7. public class BossHealth : MonoBehaviour
8. {
9.     public int maxHealth;
10.     public int currentHealth;
11.     public float percentHealth;
12.  
13.     private void Start()
14.     {
15.         maxHealth = 3000;
16.         currentHealth = 2000;
17.     }
18.  
19.     private void Update()
20.     {
21.         percentHealth = ((float)currentHealth / maxHealth) * 100;
22.     }
23.  
24. }

Script for my UI

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEditor;
5. using UnityEngine.UIElements;
6. using UnityEditor.UIElements;
7. using System;
8.  
9. public class bind_boss_bar : MonoBehaviour
10. {
11.     private VisualElement m_Root;
12.     private Label m_BossName;
13.     private ProgressBar m_BossLife;
14.     private VisualElement m_BossVisualElement;
15.  
16.     public GameObject bossScript;
17.     public float bossCurrentHealth;
18.     public float bossMaxHealth;
19.     public float bossPercentHealth;
20.  
21.     void OnEnable()
22.     {
23.         m_Root = GetComponent<UIDocument>().rootVisualElement;
24.         m_BossName = m_Root.Q<Label>("raid-boss-name");
25.         m_BossLife = m_Root.Q<ProgressBar>("raid-boss-life");
26.         m_BossVisualElement = m_Root.Q<VisualElement>("raid-boss-progress-bar");
27.  
28.         //Access game object and get value
29.         bossScript = GameObject.Find("Boss");
30.         bossCurrentHealth = bossScript.GetComponent<BossHealth>().currentHealth;
31.         bossMaxHealth = bossScript.GetComponent<BossHealth>().maxHealth;
32.  
33.         //Update progress bar
34.         m_BossLife.value = ((float)bossCurrentHealth / bossMaxHealth)*100;
35.  
36.         SerializedObject so = new SerializedObject(bossScript.GetComponent<BossHealth>());
37.         m_Root.Bind(so);
38.         m_BossLife.bindingPath = "bossPercentHealth";
39.     }
40.  
41. }

And in my UI Elements I set :
Binding path : "bossPercentHealth"

It only works if I add this code on my script for my UI , but it's not a binding at all...

Code (CSharp):

1.     private void Update()
2.     {
3.         bossCurrentHealth = bossScript.GetComponent<BossHealth>().currentHealth;
4.         bossMaxHealth = bossScript.GetComponent<BossHealth>().maxHealth;
5.         m_BossLife.value = ((float)bossCurrentHealth / bossMaxHealth)*100;
6.     }

 

Ok, so I need to set up "event callback" for my UI ?

Do you have an ETA for this feature ?

Thank you for your work.