HI Dev's I dont work for Intersystems but i have found this training course very helpful and wanted to make sure others know about it.  **Advanced Data Transformations** [Advanced Data Transformations](https://learning.intersystems.com/course/view.php?id=1502)  Add a for each loop. Create and use utility functions. Create and use lookup tables. Use counting. Create and implement a subtransformation. Add a code action. Add a group of actions to organize relevant actions.