Is there a solution/workaround to use larger arrays than 256 elements?
I cannot seem multidimensional arrays working.
One ‘tricky’ solution is to use strings with comma separators and parse them myself, but maybe there is a better solution.
(probably ParseCSVString is the way to go).
Write an extension😇
That would probably be best to do, but I don’t know if I have that much time to dig into creating extensions.
I wrote an extension that can hold arrays. This was using GP 4.older.
This is the source code (might be windows only):
Using visual studio, it is not very difficult to compile it yourself, if you’ve some experience.
If you’re somewhat desperate, I can revise this thing for the latest version (and also optimize a few things), but I need some time to do that: I’m also a working guy 
Thank you for the extension … however, for now I use ParseCSVString which does the job as well.
When I have more time later I will check into the global variables extension.