I need to see what part has the set node with dropdown selected Running?
In BP that is getting input beside any calculation it should only set Animation Select and pass it via a input, your use of Animation Select as a global variable is invalid it should be a input in the event instead global use.
To add a input to a event:
Click on Update Animation Event node → Right Plane add input of type Animation Select
So be prepared to drag a wire to all Update Animations nodes which is no biggy
In Handle Animation
Delete Animation Select the variable and drag a wire from your new input you added to the Update Animation event node