Thank you for your reply.
Actually I'm using user input for Mat ID (not a fixed list). I have a multi-sub object material with many colors, so user can choose between wide range of selections.
Now I tested a random library setup. Could you please test this also?
I choosed Architecture > Roofing > Hips and Ridges > 140 Angle Hip
Normally everything works great. You can choose material from parameters.
But... If you add a new generator at the end and connect previous generator into any slot accordingly, material selecting feature is gone. Because material ID selections prior to final generator is resetted.
Is it a bug or is it a feature?
In RailClone 5, the ID list is now a text input so that you can create a comma-separated list of IDs, or define a range, or both.
As a separate question, where do I enter that comma-separated ID list?