How to create a Not Equal to Zero condition in Set Analysis?

[john_henry]

I know how to do set analysis with text, but with numerical values, I'm not sure.   I have a condition where I need to exclude all $0 values from my calculation.  Here is my syntax so far:

[Gross Sales Order US Dollar Amount]-=0

How do I select where values are not equal to zero?

[rubenmarin]

Ohh, I forgot to test negative values, thanks for clarification Rob.