How do I manipulate xscale of a sprite?

I would like to to something like this:

while (sprite.xscale > -1){

sprite.xscale -= 0.05;

}

the effect would be kinda like a paper mario turn.

I can't find anywhere to manipulate the xscale.

Any thoughts?

If you want a proper paper mario turn, I don't think it is possible because mario is a plane and this "plane turning effect" could be only achieved by 3d engines. BUT I think you could create the illusion of it with sprite animation. Hope this helps.

I thought of that too but I don't se how that would be done with a walking animation

altering the xscale on a playing animation would have solved it.. I tried the LiteTween plugin but it wont go from 1 to -1 just from 1 to 0

edit:

going from mirrored to not mirrored in a chosen number of steps...

edit:

going from mirrored to not mirrored in a chosen number of steps...

Exactly... And these number of steps state could call the flip animation