When using streaming data (in-db) with a custom expression, the functions are different than standard Spotfire functions. The description for how to use these functions suggest going online and finding Live Datamart or data base documentation. This is not easy to find and even when so, the functions in documentation tend to be different and difficult to understand for a Spotfire Analyst since they are written from a Streambase perspective.
Please include function descriptions directly in the Expression Builder with examples (like other existing Spotfire functions)