How do you cast to widget BP from Pawns

Im trying to cast to a widget from a pawn - I want to make a custom event in the Widget BP graph - and fire them off from the Pawn BP - I can’t seem to figure out what to plug into the object slot here and I am cast fails all the time


This doesn’t seem like it works the same as other blueprints when I went from pawn to HUD or from Pawn to other actor

get all widget of class> Get> Cast