Insufficient information!

The best way to get help here is to show us what you've done and be explicit about what you understand to be the problem(s). Please UPDATE your question with additional information and the problematic code (or the minimal code that demonstrates your problem.)

There are far too many possibilities that (sort of) fit your question to offer much of any use, other than the suggestion that you may also wish to use Search (just below the banner in the blue bar) or Super Search, using the terms "parameter" and "pass." It might also be well to read your documentation on topics such as "namespace" or even "subs."