Tower facade problem

Hi everybody,

i am testing some facades and feel stuck in my script.
the mullion creation part needs to be simplified instead of copied for each level of the tower.

I just don’t know how.

It would be greatly appreciated if someone could have a look at my script.

Thank you in advance

TOWER_FACADE_TEST_3.gh (37.8 KB)
TOWER_FACADE_TEST_3.3dm (312.0 KB)