How do i reverse an FBX animation?

Development Character & Animation
1

I have made an animation of a box opening and i want to reverse it to close. the box itself is too complicated for a timeline animation so i did it in Max.

2

You can do this by setting the Playback rate in your animation blueprint (or code) to a negative value.

3

That done the trick thanks alot.

4

i don’t have words to thank you enough

5

I don’t kow why, but it isn’t working. If i set play rate -1, then nothing changes. But if i set value 5 , my animation works 5x faster. So i can’t understand why PLayRate isn’t working with negative value, maybe i do something wrong?