Retrieve back data based on current filter criteria
Currently I have a Year filter and a Month filter. No dates are used. Just year and month. When a user selects a Year and then selects a Month (eg. 2019, 04), the data that must be displayed needs to be for the current selection and 13 months back (so based on my example I want data from 2018, 03 until 2019, 04 ). What I am trying to do is show 3month, 6month and 12month sales and budget averages in a bar graph.
I currently have this which is not working. (YearPeriodId is a unquie key given to my Year and Month combination) = (sum({$<YearPeriodId={"$(=Max(YearPeriodId)-1)"}>}Quantity) +sum({$<YearPeriodId={"$(=Max(YearPeriodId)-2)"}>}Quantity) + sum({$<YearPeriodId={"$(=Max(YearPeriodId)-3)"}>}Quantity)) /3
I have also tried using variables. Also not working. sum({<MonthNum={">=$(=vMaxMonth,-3)) <=$(=vMaxMonth)"}>} Value)
