/3/ - 3DCG

How can I get these verts to move down to the bottom of the building using geo nodes?
Like I guess what I want to do, is the equivalent of selecting all the verts on all the array pieces, and scale them to zero on the Z axis down to the cursor on the bottom.
I'm trying to have it make a "side" of the building automatically.
I can get em to move using set position, but they all move in the same pattern. I can't get the verts to get to an absolute position of Z,0.