Shell Form finding and Cross-Section Optimization

Hello!

I'm currently working on a project in which I would like to find an optimum shape for a shell structure based on the principels of inversed hanging membranes (like the shells designed by Isler). When an optimum form is obtained, the cross section of the different shell elements can be optimized. I would like to obtain a shell model with an optimized height and optimized cross sections for the different shell elements

I tried to make a script with the Karamba tools 'Large deformation' and 'Optimize cross section', but since I'm quite new with the programs I am unable the check whether I made a correct definition. Besides that I do not understand why:

- the model view shows a flat shell/plate when the cross section is defined in the form finding part...

- the legend only says: multiple legends and I am not able to view the different cross-section

- how it is possible to make the different shell elements visible on the shell model in rhino 

I would be really great if someone would be able to help me out!

thanks a lot in advance!

kindest regards, Britt