UMG to Actor -> Drag & Drop detection

I"m trying to create a Drag & Drop system from UI to a 3d object (think of like a trash container) in the world… i’m not detecting drop/drag-enter/leave events on this object… even made a 3d widget to hold the drop & enter/leave functionality and tie this to the actor itself so that it faces the camera… still no luck.

Any suggestions? I can detect HitResultUnderCursorForObjects(ObjectTrace) but it only fires when i’m NOT dragging…
http://puu.sh/sO7Do/5bb72b55cb.png

FWIW - i made sure that the rest of the canvas screen of the topmost HUD is “SelfHitTestInvisible” - so there should be no elements in UMG that are blocking the drop call
i even went as far as creating a drop event on this HUD just to pickup any drops to it - which there arent any…

I tested the same widget on the actor for MouseEnter - and it has 0 reaction… which leads me to beleive that 3d actors dont house widget collision? Or do i need to raytrace at this point?