you can do it all in the level blueprint.
add a cube to your level and call it ‘falling cube’
create a new blueprint in the content browser and call it ‘collider’ Add a box collision component and a cube to the blueprint (the cube is to see where it is) then scale the cube so it’s smaller than the box collision volume, and set the collision on the cube to ignore all. add one to the level
go back to the level editor and open up the level blueprint from the blueprints button above the editor (make sure the window isn’t fullscreen) then drag the ‘falling cube’ and the ‘collider’ from the world outliner on the right.
then basically create this graph