Use AkTimelineEventPlayable to set state

Question

I'd like to use the AkTimelineEventPlayable on the Unity Timeline to set a state, but this doesn't appear to work. I've ensured that the Wwise 'Set State' event is set up correctly (it can be triggered as expected using a trigger collider). Play events are also working as expected using said timeline, leading me to the suspicion that it cannot be used for other Wwise event types. There is no such limitation I can find in the documentation https://www.audiokinetic.com/en/library/edge/?source=Unity&id=unity_timeline.html

Can anyone clarify this for me?

Thanks :)