Board Thread:Support Requests - Getting Technical/@comment-11936497-20130521174830/@comment-10688548-20130521175908

It's easier than you think. In fact your example is very close: just take out the comma (and make sure you pipe your parameters).

All that  does is check if some non-whitespace thing exists in the first field. So  will always return true because "foo" is just plain text that exists no matter what.

Just stack piped parameters right next to each other and you're good: the piped syntax (like ) returns whitespace if the parameter is not defined.
 * If neither parameter is defined, #if checks if "*whitespace* *whitespace*" exists, and returns false.
 * If either is defined, #if checks if "*whitespace* *something*" exists, and returns true.