Why SubstanceImporter class to Batch multiple Procedural Materials does not work?

Hello and good day, I’ve trying to change the texture settings from a procedural material using the SubstanceImporter class without succeed, what I’m trying to do is mod texture properties in a bunch of procedural materials (more than 500) but doing it manually will takes a lot of time, my question is:

How this method suppose to works, the image below shows what I mean:

Unfortunately the documentation do not helps a lot on this, any help will be most welcome, thanks in advance.

P.D.: Using the class directly does not allows you to use the method, and the original console message shows Null reference exception.

I found the answer seen another type of question, this require a bit more study.