Hi, again, I have one more question about the function ALL. what I am trying to achieve is to calculate the total OOS days (out of stock) days regardless my filter selection. It is kind of YTD OOS days. I used All in my DAX, but it did not work as I expected. Could someone please help me take a look of the syntax to see what I did wrong? Basically the YTD OOS measure should be changed for a same product when I change the date slice.