trangular individual cushion dome

Hi Daniel!! first of all, just Thanks for everything you do...

I am trying to do an inflatable dome using a diagrid pattern from lunchbox, my problem is that i cant make it work, it supose to be easy following the examples you´d shared, but i dont know what is the answer to this...

The aspect of the dome must be something like this, but much more inflated...

i made individual cushions in order to stick them together and make a dome.

I want to create cushions like the right one ( i made this manually)

and i would like to test the deformation of the dome depending on the pressure of the cushions.

this is an aproximated section

I followed "the cushion tie" example and many others, but im not sure which is the problem. Sorry for my ignorance in this theme....

Maybe the problems depends on the grasshopper version, but i cant upgrade because i use an educational lab license of my university, and i´m not able to upgrade Rhino from 5.0 to 5.5, so the version of grasshopper i have is 0.90014 but using kangaroo for other matters is not a problem...

 i attach the file at the end of the post

so if you have time to have a look , i will eternally gratefull!!!

thanx

Pablo.