Alternate selection srf

Grasshopper
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1

image
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Hello ! I created this script for a roof structure i want to select the alternate fins for further details .I there any possible way in grasshopper so i can select the alternate fins.I try dipatch and null pattern but iam not getting the exact output.
Roof Script.gh (23.5 KB)

Thanks,

2

Dispatch with the default TRUE/FALSE pattern seems fine.

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