play animation once, clampWhenFinished, then play in reverse on useEffect cleanup?

[ashleymvanduzer]

Hey all,
I found this explanation that seems to sum up the settings necessary to do exactly this, but I can't seem to get an animation to play in reverse by setting the timeScale on the animation to -1, followed by unpausing the animation, in the cleanup of the useEffect that initially triggers the animation.

Does anyone have any pointers on how to accomplish this? seems fairly straightforward, any advice would be greatly appreciated