how to include a not condition in set analysis

[#1]

i need to count a dimension, and i need to exclude null values, How do i implement using set analysis or is there any other way to implement it.

[SunilChauhan]

sum({<fielname-={'value'}>} sales)

- = is used in set analysis for not condition

hope this helps

[#3 · Accepted solution]

i did a numeric count of the dimension ,  I am able to get correct answers.