Simple Animation Question

I have made my walk script and animation trees for this. My question is this. How would i play the Punch animation and then go back to the walk animation when the punch animation has finished?

I attempted isplaying/Isplaying... it gives me an error
MissingComponentException: There is no 'Animation' attached to the "Player" game object, but a script is trying to access it.
You probably need to add a Animation to the game object "Player". Or your script needs to check if the component is attached before using it.
Movement.Update () (at Assets/ROTP Beta Animations/Scripts/Movement.cs:32)


.. Thank you in advance for your time.