SimpleMoveTo location/actor do not work anymore

I have used these before, but in my new project (in version 4.5) they are simply not working.

i’ve seen posts/answers about this talking about Behavioural Trees - but im sure I’ve not had to use this before with MoveTo

I have a navmesh, I have a Character class (but no skeletal mesh, just the capsule being drawn), and an AiController
on Event Begin → i call MoveTo and pass an actor found in my level

but the Character never moves

Any help would be appreciated !