2d character animation change when gui button is pressed

I am making a 2d running game and i want to know how to make my character change from running animation to jump animation when when jump button(touch button) is pressed!!!

 

Take a look at our animation tutorial, you should get your answer in the first tutorial

http://unity3d.com/learn/tutorials/modules/beginner/animation

 

i want to change animations of my 2d character with guiButtons and i didnt see any gui in your videos