How can I reverse an animation?

Good morning guys, I'm making a game in isometric and I want to use the same animation that I have to walk forward... using it as walking backwards... and I would need to be able to reverse the animation that I have for forward... but as if it were backwards... I don't see any option in construct to invert the animation that instead of going from sprite 1 to 100, for example, go from 100 to 1...

Does anyone know how to do it

Set the animation speed to a negative number and the repeat-to frame to the last frame instead of the first frame.

thanks...