Vector perpendicular to the surface in specific points

Hi everyone and thanks. I would like to get the vectors perpendicular to the surface on these 6 points I have created with panelling tools, I need the vector to offset the points inside the surface. I tried and check on the forum but I couldn’t find anything. Thanks again.
bottle.gh (16.3 KB)

Hello,

Your GH file shows a Voronoi pattern…

Anyway, the component you need to use is Brep Closest Point.

I m so sorry. Thank you for letting me notice this. here is
bottle.gh (16.3 KB)
the correct file.

Your base surface is missing, I replaced it with a basic revolution.

As said above :

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:man_facepalming:

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thank you so much