Interface designer rollup category values

[nicolasmertens]

Hi Everyone,

I can't seem to figure out how to make a summary of all the expense records within a category. I have a table with  expense names with their respective number values and a single select to categorize the expense.

However when in the interface designer I can't seem to "rollup" "sum(value)" per category to report the high level rather than every list item. 

[TheTimeSavingCo]

Try adding a "Number" element, making it only show specific records and filter to the category, and make it a field summary that sums on your amount field:

Link to base