how to update timeline in playmode when clips are added/deleted?

hello, there is another question which is bugging me.

I have created some custom clips as well as my own MixerBehaviour.. looking more or less as follows:

Code (CSharp):

1. using System;
2. using UnityEngine;
3. using UnityEngine.Playables;
4. using UnityEngine.Timeline;
5.  
6. public class ScreenClientMixerBehaviour : PlayableBehaviour
7. {
8.  
9.     public override void OnPlayableCreate(Playable playable)
10.     {
11.  
12.         // doing stuff
13.     }
14.     public override void ProcessFrame(Playable playable, FrameData info, object playerData)
15.     {
16.      
17.         // doing more stuff
18.     }
19. }

Say I have some tracks with some clips on it.
In Play Mode, when I move the clips around, it takes effect as expected (in my case some properties are set according to the clips position on the timeline). But when I remove a clip, the clip still seems to be on the timeline internally, although not visible anymore (the properties are still being set). Similar to this, when I add a clip, there is no effect (no properties are set where the new clip lies).


I realize when adding/removing clip on the timeline

public override void OnPlayableCreate(Playable playable)

is being called and thus adding internally the clips for each playable. How can I call this function during play mode? Or is there another way to have the timeline update its interal clip list?

interestingly though I can get the tracks as well as the clips by iterating through PlayableDirector.playableAssets, but this doesn't have any effect on the timelines playables..

EDIT: hm.. I just found out that I actually can trigger OnPlayableCreate() by rebuilding the graph by PlayableDirector.RebuildGraph(). But unfortunately that didn't solve the issue of not being able to have added/removed clips taking effect during play mode..