XMLTable in PL/SQL

Question

I am trying to get data which is in an xmltype table for use in my plsql procedure and keep getting err:
Error(19,41): PLS-00302: component 'OBJECT_VALUE' must be declared
Am I approaching this wrong? It works fine without the into in SQL.
Thanks
declare
v_mc_id number;
v_class_id number;
v_dept VARCHAR2(10);
v_class_num number;
v_section VARCHAR2(10);
v_professor VARCHAR2(100);
v_title VARCHAR2(100);
v_syllabus_hash_key varchar2(512);
BEGIN
-- Get the non-nested items from the XML document
SELECT c.department,c.classNumber,c.section,c.professor,c.title, c.syllabusHashkey
INTO v_dept, v_class_num, v_section, v_professor, v_title, v_syllabus_hash_key
FROM classxml,
xmltable('/class' passing classxml.object_value
columns
department VARCHAR2(10) path 'department',
classNumber number path 'classNumber',
section VARCHAR2(10) path 'section',
professor VARCHAR2(100) path 'professor',
title VARCHAR2(100) path 'classTitle',
syllabusHashKey varchar2(512) path 'syllabusHashKey') c;
end;

Answer 1

The post in the link is very good..However, for starters on XMLTable usage I felt it could be little complex. I found another link that explains the XMLTable Usage with Simple examples. I would like to recommend it for somebody who are trying to get started with XMLTable.
Cheers..