Help with creating an array

I'm new to grasshopper and I have a question on the best way of arraying or moving my piece so that it folds along the edge of the square. 

Right now, I have it so that I have a slider to move the square up and down, so I want the copied or arrayed piece to be able to move with it.

The picture of the model is what I'm trying to model on grasshopper. Any help would be appreciated!