Dataset:
Product     Item    Status
A            aa     0
A           aaa     0
A           aaaa    0
A          aaaaa    1
B            bb     2
B           bbb     0
B           bbbb    3
C            cc     4
C           cccc    5
What I want?
Calculate the count of items which have status = '0' at the Product level. 
Expected Output:
Product        Count
A                3
B                1
My formula is as follows:
{FIXED [Product]: CountD([Item) }
and I dragged the status into filters.
But this is not working. Can someone help?