Unix: I'm trying to switch to using the $ZF(-100 function in place of $ZF(-1. I have it working for a simple, single, cmd, but can't figure out how to pass a piped sequence. Maybe this just isn't allowed?

For example:

S sc=$ZF(-1,"ps -Af | grep username")

works, but I can't figure out how to format this for the $ZF(-100 function.

???

Thanks