I have a collection of Expenses (date, category, dollar amount), along with another collection connected to category called P & L Expense Category. My goal is to take all of the records that have the same P & L Expense Category, sum up the total dollar amount on those records and then display that as a dynamic line in a list/report. I got the sum number easily, but I’m getting repeat entries on the list of the same P & L Expense Category. I can’t figure out how to only have one entry per P & L Expense Category dynamically. I can figure this out if I hard code the category and then filter down the sum number to the P & L Expense Category. But! My goal is to avoid having to muck with the report anytime a user wants to modify the P & L Expense Categories.