Spawn Hitbox in Animation Montage

Hi,

i am working on custom hitboxes and i want to spawn them in with an animnotify(state?).

The hitbox itself should just be a cube that is not attached to a skeleton socket.

I would want the anim notify to generate a visual representation of the cube in the montage editor so that one can accurately position the cube in the editor.

So my question is: How can i draw debug shapes in the montae editor through a custom animnotify or how can i spawn a staticmeshactor through an anim notify so that it is visible in the montage editor.

Thank you kindly!