Regarding the error, it seems that you are using the SendMessage clip to call a function on the actor, that has the same name as another function on the same component (this happens if function overloads exists). Can you please confirm that the function you try to call has an overload?
Regarding the dynamic shot controller, can you pleae post a screenshot or small gif/video showcasing the issue you are facing so that I can better understand what could be wrong?