Currently iClone does not support the ability for a user to INPUT TEXT for the Substance Designer TEXT NODE. Please add support for that.

Today the only option is to construct a Substance with multiple pre-defined text strings, and use a Switch node, but that is a major restriction.

Attached you will find a sample Substance (both the .sbs and a .sbsar file in a ZIP file), along with screenshots from Substance Player (showing support) and iClone (showing lack of support) for text entry.

P.S.
I'd love to call this a bug, but I guess "Suggestion" is the most honest classification.

P.P.S.
Thank you for implementing my previous "Substance" suggestion to add support for the $TIME function. It is very useful.