Lunchbox - Creating 2d bracing on the hemisphere instead of full sphere

I am making a 2d bracing using a hemispherical surface. First I made a sphere in Rhino, then trimmed it using a plane. Then I referenced the resultant surface in Grasshopper. However, the lunchbox component generates 2d bracing for the whole sphere.

What should I do to generate truss only for hemisphere?

LUNCHBOX, DOME PRACTICE_SAMPLE TEST.gh (79.0 KB)

LUNCHBOX, DOME PRACTICE_SAMPLE TEST_re.gh (78.5 KB)

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You can also use Shrink Trimmed Surface from Pufferfish for a more generic solution !

Shrink.gh (83.0 KB)

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Thanks a lot!

Thank you!