Anchor is not working

I’m studying grasshopper and making tensile object for my study.
I set up anchor and connected solver, but somehow it doesn’t work.
Someone could you let me know why?
Part 3.1-A-2-temp.gh (25.9 KB)

I have not looked at your file.

The anchor initial position must be coincident with a mesh point. Coincident within the tolerance set in the solver. Is that the case in your definition?

This algorithm is based og guide book and I have tracked what is written. In this guide book, anchor points are not coincident with mesh object, but out of mesh. However, I also feel what you write, so I will try to reconstruct. Thanks for comment.

A solution to be perfected.
Part 3.1-A-2-temp a.gh (37.1 KB)

Thanks for one of solution. Its so interesting.
I also have recostructed mesh object like this refering your code and it looks working better.
It seems there are still some issues, but I will close this thread for now.
Thanks for replies and opinions once again.
Part 3.1-A-2-temp-r.gh (30.8 KB)

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Another interpretation of mine.
Part 3.1-A-2-temp b.gh (34.6 KB)

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Wow, its so smart code.
I can learn a lot from you. Thanks!