Setup specific frame of a sprite animation and stop the animation there

Hey !

I have this sprite with 3 frames (some kind of atlas)

I wanted to find out how to use mecanim to switch from one frame to another with like a float parameter to control state changes.

I'm well aware about the legacy animation system ( http://answers.unity3d.com/questions/181903/jump-to-a-specific-frame-in-an-animation.html )

But that's not how I want to proceed and I couldn't make that solution work in Unity 4.3.2f1 anyway.

Right now I'm using a public sprite[] array to store the different sprites generated by a slicing of the sprite editor. And calling each frame through

 spriterenderer.sprite = sprites[index];

It works but it would be quicker to use the mecanim system if it's possible.

Any pointers ?

Many thanks !