Problem with Audio Visualisation blueprint

Greetings everyone, I was currently looking for some help with my take on making an Audio visualisation with a bunch of cubes, everything worked fine as I followed this video for it.

The problem began as I mentioned that he used a pre-defined cube-array field… I was looking for a solution with normal cubes I would add to the scene, wich allows me giving them individual spots to " jump " with the music.
Currently I am unaware if how to do this at all, so any possible help is welcome =)
Here is what I got so far.