"User" Nodes - user data to control node values

Hi have a switch material that I’d like to control with user data, ideally an integer in the attributes for a set of polygon objects. For this I am trying the user integer but I only see:

Vray objectID
mograph index and alternative ID

Hey @wolfgang_himmelfarb , you have oriented correctly for using the User Integer node. I suppose you mean the predefined user attributes accessible here (highlighted with 1 ):

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As mentioned, these are just predefined values that you may use and are there for convenience. In practice - the User Attribute parameter (highlighted in 2 ) is a String where you can put an arbitrary name of User Data value on the objects you wish to read in your material. Please check the Tutorial workflow in the documentation here for more detailed examples on how to actually create user data and use it.