Change movement animation playSpeed via button?

Probably an extremely simple answer but I can’t figure this out.

Just for fun I’m added a sprint function using the left shift key. I’m able to increase the run speed just fine with shift but I’m trying to increase the animation play rate to match it. Upon trying to use the Set Play Rate, I am unable to set the target to the character’s movement. I get the message “Error This blueprint (self) is not a AnimInstance, therefore ‘Target’ must have a connection” I’ve tried using multiple actors and variables for the target but none of them take.

Here’s what I’m working with - http://i.imgur.com/j30ilA1.png


What am I missing?