Different year in one chart

[#1]

Hi,

in my table I have invoice data of different years. In one chart I want to show the ammount per month (from a selected year) and the ammount per month (from the selected year minus 1). How could I do this?

[giakoum · Accepted solution]

example :

sum({$<Year={"$(=only(year-1))"}>} [value])