I had this same question a while ago when I first tried this tutorial, never got it working. But since then I've figured out more and more about Playmaker and now I have a way.
First, put a Character Controller on the character. Very important.
Then you want to use Controller Simple Move instead of Move Towards. And set it to move at maybe 50 Speed with 1 in Z and set to local space. This should move it forward in which ever direction it's pointing. And because of the Smooth Look At, it's forward direction is set towards the target sphere. And it should go up over obstacles (less than the characters slope limit allows)
But now that you're not using the Move Towards, you don't have a Finish Distance. To make up for that try adding a sphere collider to the target sphere and setting it to Trigger. Then add a new FSM to that which, when it gets a Trigger Enter event (Character colliding with it) will send a To Stop event to the Character. Which triggers the Global Transition to bring it back to the Idle State.
Hopefully the pictures will help explain. The first image is the new Target Sphere FSM and the second image is the modified Character FSM.