Hi! Been of for a week...:)   If you are using SAS VA8.3 you can create an aggregated table with your max and then use this table as input for further calculations.   Don't know if this helps you, but i don't think you can do everything by just adding calculations and not the aggregated table.   Havn't tested any more, but maybe this can help you somehow 🙂   //Fredrik   ... View more