If you want {Example} to equal something, then is there a reason you need it to not equal something at the same time? Meaning if you use an if/then statement, when you set {Example} equal to something, the 'then' part of the statement will only happen when the first part is satisfied. You wouldn't need a 'does not equal' part to do this.
As lbass said though, example data would help us help you.
-DJWW