AnimationEvent don't let change parameters at runtime

Unity Engine
1

AnimationEvent has strange behaviour. When I’m trying to change parameter (int, object…) in foreach block it changes parameter value for current clipEvent but it doesn’t change parameter value for animationClip.events_! So I can suppose that IEnumerator returns reference to copy of the event which is instance of class. It looks like unexpected behaviour. Am I wrong?_
[spoiler]
```csharp
*namespace UnityEngine
{
[RequiredByNativeCode]
public sealed class AnimationEvent
{

    public AnimationEvent();

…

    //     Int parameter that is stored in the event and will be sent to the function.
    public int intParameter { get; set; }
  
    //     Object reference parameter that is stored in the event and will be sent to the
    //     function.
    public Object objectReferenceParameter { get; set; }
 ...
}

}*
* *[/spoiler]* *However I'm tried to change parameter through direct reference to event. As you can see setter of AnimationEvent is public. But parameter didn't change.* *csharp
*public class ChangeAnimationEventParameter : MonoBehaviour
{
[SerializeField] AnimationClip animationClip = null;
void Start()
{

    foreach (var clipEvent in animationClip.events.Where(@event => @event.functionName.Equals("OnEvent")))
    {
        //clipEvent.intParameter equals 0 at start
        clipEvent.intParameter = 1;
        Debug.Log(animationClip.events[0].intParameter + " "+clipEvent.intParameter);

    }

    animationClip.events[0].intParameter = 2;
    Debug.Log(animationClip.events[0].intParameter);
}

}
//DEBUG LOG
//0 1
//0*
```

2

Have you resolved this problem?

3

I have some success by replacing the entire array after setting values in it:

AnimationEvent[] ae = animationClip.events;
ae[0].intParameter = 2;
animationClip.events = ae;