p:validate-with-xml-schema

I guess I don't know how everyone else uses XML Schema (or RelaxNG or
Schematron), but when I do schema validation I want to know if my XML is
valid or not (and if not, why not?).

Two questions, if I may:

1) Why does this step return a PSVI instead of true/false?  I'd like to
understand the thinking.

2) How can I get it to return true/false?

TIA!

James Garriss
http://garriss.blogspot.com