Hello Everyone!
I have a pretty basic python question. How to make multiple inputs for a python node? It isn’t working, as I would expect (automatically 
)
You have to hit the “+” button on the node.
“the variable you want” = IN[0] (or IN[1])
http://dynamoprimer.com/en/09_Custom-Nodes/9-5_Python-Revit.html
Maybe check the primer.
Edit: I was misreading it, just click the + button indeed.
Just click on the " + " sign!
@bmsewell @PauLtus @ricardoperucci
Oh! TRUE! Thank you all! 