multiple geometry’s leads to script multiplying structure please help.

New to grasshopper please help

I have two scripts which gives each building on a site a specific height based on the ratio between the footprint and the total site area.

The first script allows for the height of the building to be split in to floor plates and can be applied to multiple geometry’s. (See image below)

The second script does the same but allows for a cut back in the floor plates, At specific angle at a specific height, the first angle is 40^o starting at a high of 5m and then changes to 60^o at 15m up to roof height.

The issue that im not able to sort out is, when trying to apply the second script to more than one building area and building site the script then multiplies everything. So it will make four times the floor plates and building skin.

Can anyone help so that I can apply this to lots of building sites and areas? Please see attached drawing and grasshopper file.

Thank you