So the error indicates that the abp_ref variable is empty (access none). The reason for this is because in your first image you are casting the animation instance of your unit to ABP_Unit, and if you’re following my old tutorial on this I’m guessing you’re using a new ABP that is not a child of ABP_Unit. If this is the case, then the cast will fail and abp_ref remain empty. To fix this, change the cast so that it casts to your custom animation blueprint instead and change the class of abp_ref to your custom class. After that replace the AnimateMovement and AnimateUnit events so that it uses the new abp reference. Another thing that is different now from my old tutorial is that if you make a fresh animation blueprint which you want to work like ABP_Unit you have to remember to add the BPI_AnimateUnit interface to it. That should be all you need to do.