What do you mean by Expressions? Any aspect of development would go in the appropriate forum (GDL expressions, C++ expression/API, etc). If you mean expressions for properties etc, that is not a developer topic, but is a Community topic under Project Data and BIM.
One of the forum moderators AC 28 USA and earlier • macOS Sonoma 14.7.1, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB
