Motion controller actors being spawn at runtime, how do I reference them to retrieve their transform?

At the moment I’m using Vive’s trigger to grab stuff and the face button 1 to spawn cubes in a level at target point actor.

I want the cubes to spawn in the current position of the motion controller/ or in front of the player, possibly stuck to the camera.

Spawning cubes is done in the level blueprint.
How do I approach this?