NLS support in xmlparser for pl/sql??

Question

Hi,
I am not able to create a DOMNode with NLS-Text between the tags of the node. I am using the Oracle xml parser for pl/sql. All I need to do is create the node - "<wish>Good Morning</wish>". The value - "Good Morning" needs to come from a variable of type nvarchar2. A call to the function xmldom.createTextNode gives the following compile time error - PLS-00561: character set mismatch on value for parameter 'DATA', which literally means that the "DATA" formal parameter takes in only a varchar2 and not an nvarchar2. I could not find any other function to create a text node, which accepts an nvarchar2 data. Does this mean that the xmlparser for pl/sql does not support NLS? Please help.
Thanks in advance,
Vincent Morris.
Procedure used for creating the node:
create or replace procedure create_mynode is
nls_text nvarchar2(50);
doc xmldom.DOMDocument;
node xmldom.DOMNode;
element xmldom.DOMElement;
text xmldom.DOMText;
text_node xmldom.DOMNode;
dummy xmldom.DOMNode;
begin
/* code for getting a DOMDocument into the variable doc
nls_text:=n'Good Morning';
element:=xmldom.createElement(doc, 'wish');
node:=xmldom.makeNode(element);
text:=xmldom.createTextNode(doc, nls_text); -- ERROR ON THIS LINE
text_node:=xmldom.makeNode(text);
dummy:=xmldom.appendChild(node,text_node);
/* code for printing the tagname and value of the node contained in the variable 'node'
end;

Answer 1

declare
doc xmldom.DOMDocument;
nl xmldom.DOMNodeList;
n xmldom.DOMNode;
t xmldom.DOMNode;
val VARCHAR2(30);
begin
doc := xmlparser.getDocument(p);
nl := xmldom.getElementsByTagName(doc, '*');
n := xmldom.item(nl, 1);
t := xmldom.getFirstChild(n);
val := UPPER(xmldom.getNodeValue(t));
end;