NLA strip

I’ve been attempting to follow tutorial on nla and walkcycle but have got stuck. Here is my blend file;

I’m stuck at the point where it says’

"Then we will create a PATH object for our hero trying not to make it too curve for now (the more straight the better), once done let’s parent the charcater to the path (and not the other way round). If everything went OK, we will see our charcater moving stiff along the path when pressing ALT+A.

Now go to the NLA window and add the walkcycle action in a channel as a NLA strip. With strip selected press N and then push the “Use Path” button."

I’m in the NLA window but pressing N just brings up an empty box.

Hi, are you sure you have the walkcycle action SELECTED (yellow) in the NLA window ? It should work then.