Using NodeLink Class

Ciao Guys,

I am trying to use NodeLink2 Class with Grid Graph, but I was fighting with this a few hours without a final result. I would like to create a few grid graphs with stairs on it. One stairs in connected with one graph and i would like to use it to move to another place in the game. Is it possible to do that using NodeLink2 and Grid Graph?

All the best,
Detrix