Problem with OJXQI - The Oracle Java XQuery API

Oracle Server Version: 9.2.0.3.0

I have installed the oracle xdk kit and oracle xquery package.

I created one table of XMLTYPE and inserted an xmldocument in the table.

Now using OJXQI, I am trying to query the database with the following xquery in my java program:

"let $O := sqlquery(\"select * from xmltable\")/ROW \n" +
"for $j in document($O) /AccountData/:Customer \n" +
"where $j/LastName = \"hunCT9S\" \n" +
"return \n" +
"$j/FirstName";

The result from the above query is 2001 (which is equal to the total number of nodes in my xml document but not the exact result).

The result should be: <FirstName>......</FirstName> and I can get this result by executing the following xquery on a native xml database:

"for $c in document('/MerchantAccountData')/AccountData/:Customer \n" +
"where $c/LastName = \"hunCT9S\" \n" +
"return \n" +
"$c/FirstName";

Please inform me about how to formulate the above xquery to get the correct result on Oracle 9i.
thanks in advance.

A LITTLE ADDITION TO THE QUESTION ABOVE:
These are the table details that I created on oracle 9i
Table name: xmltable

[create table xmltable of xmltype;]

I inserted one row in the above table with the syntax:
insert into xmltable values(xmltype('...............
............'));