VAV logic

[Haug1]

Hi. 
I need some help to make this script:
Fist i need a  ga/ input that chenges between summer and winter mode.
 
I have 4 g/a with cooling command 0-100%. 
I need to make a sum based on of the cooling modes are activ. The cooling is activ if the avlue is more than 0 (1-100)
This sum is the setpoint of the ventilation system that i need to send to on g/a

Summertime:
If not activ:                       
cooling cmd 1: 250
cooling cmd 2: 390
cooling cmd 3: 500
cooling cmd 4: 180
If activ:                       
cooling cmd 1: 250
cooling cmd 2: 650
cooling cmd 3: 850
cooling cmd 4: 250

Wintertime:
If not activ:                       
cooling cmd 1: 250
cooling cmd 2: 250
cooling cmd 3: 250
cooling cmd 4: 120
If activ:                       
cooling cmd 1: 250
cooling cmd 2: 250
cooling cmd 3: 250
cooling cmd 4: 120

I Also need a new g/a output ff the colling command is not 0 (1-100) to controll some vav dampers
 summer time i want the following:
cooling cmd 1: if 0 =0%, if 1-100 =100%
cooling cmd 2: if 0 =35%, if 1-100 =100%
cooling cmd 3: if 0 =42%, if 1-100 =100% 
cooling cmd 4: if 0 =46%, if 1-100 =100%
in  winter time i want the following:
cooling cmd 1: if 0 =0%, if 1-100 =0%
cooling cmd 2: if 0 =0%, if 1-100 =0%
cooling cmd 3: if 0 =0%, if 1-100 =0% 
cooling cmd 4: if 0 =0%, if 1-100 =0%