Document custom parameter grasshopper

@fsalla , it is possible to generate or call these Parameters as VARQ objects?

I have a list of Parameters already existing in a Space Style (and walls, and slabs, etc), but not as ‘Rhino Parameters’, and assumed that I could feed in a Property / Value as Strings like I would with Keys / Values.

It works on some of the items, but fails on others with a Solution exception:Object reference not set to an instance of an object error.
These are my data trees: