Why does this line of commands not work for my animation

Why does this not work Am i missing something Keeps giving me an error message im new to this so i was following a guide and this is exactly what it said to do

Heres the guide im using https://docs.unrealengine.com/latest/INT/Gameplay/HowTo/CharacterMovement/Blueprints/AnimBlueprint_Walk/index.html
step 15 is the one im stuck on