Creating animation events (with EditorWindow)

I'm trying to add events to animation clips (with a gameObject as argument).

Code (CSharp):

1.  
2. var e = new AnimationEvent();
3. e.functionName = "EventHitbox";
4. e.objectReferenceParameter = hitbox.gameObject;
5.  
6. // Option 1: This seems to create everything as it should but once I run the game the events
7. //are not fired properly (some of them work, some don't). I think this is closer to the "official"
8. //way of going about it, but it won't work for me.
9. var currentEvents = AnimationUtility.GetAnimationEvents(animClip).ToList();
10. currentEvents.Add(e);
11. AnimationUtility.SetAnimationEvents(animClip, currentEvents.ToArray());
12.  
13. // Option 2:
14. animClip.AddEvent(e); // this is not persistent, once exitting playmode the events are gone.
15. var currentEvents = AnimationUtility.GetAnimationEvents(animClip).ToList();
16. // so I try and add it here permanently. This makes the anim events persist up until I restart Unity.
17. // Additionally, the events in playmode are fired properly this way unlike Option 1.
18. AnimationUtility.SetAnimationEvents(animClip, currentEvents.ToArray());
19.  
20.  

So right now, I'm using option 2, but the problem of animation events disappearing is also true for Option 1, so it's all the same.

TL;DR:
My animation events references are gone once I restart Unity's application (the passed gameObject = null). Why does that happen?

If you don't understand the problem, consider telling me how you would approach creating animation events in animation clips programmatically.

 

Okay I understood the issue. It's due to the fact that I was referencing game objects that were not Prefabs but gameObjects in the scene.

Unfortunately, I don't believe that one can link animation events to scene objects.