Getting a warning in Animations Blueprint

Hi Getting a warning in a transition Rule. Followed tutorial on this on Animations Blueprint. Running UE4 4.21.2-4753647+++UE4+Release-4.21
https://docs.unrealengine.com/en-US/…one/index.html
Cant get this to work. I have used the Mannequen as reference for my character and replaced the skelletal mesh