import module namespace ref = "http://www.zorba-xquery.com/modules/reflection"; declare function local:plus($param as xs:integer) as xs:integer { $param + 1 }; ref:invoke(xs:QName("local:plus"), "text") (: Example configuration (taken from zorba testsuite): Error: http://www.w3.org/2005/xqt-errors:XPTY0004 --------------------------------------------------------------------------------------- --------------------------------------------------------------------------------------- Test returns an error code. :)