XSL-1010 (Error) Element 'when' not found in 'xsl:choose'

Question

I am using xmlparserv2.jar from xdk9020b.
An XSL file is loaded as XMLDocument and is modified by adding elements to a xsl:choose tree. The file acts as a "template" for an XSL that must be built and used in memory.
When it is used as constructor for a new XSLStylesheet, then it generates the above error message. If I dump the XMLDocument to file, it contaisn the appropriate modifications, and if I execute oraxsl with it as stylesheet, everything works fine.
Here the snipped of code I use:
DOMParser parser= new DOMParser();
parser.setPreserveWHitespace(true);
URL xsvgURL = new URL ("file","localhost","svg.xsl");
parser.parse(xsvgURL);
XMLDocument xsvgdoc;
xsvgdoc = parser.getDocument();
XMLElement ex = (XMLElement)xsvgdoc.getDocumentElement();
NodeList getit=xsvgdoc.selectNodes("//xsl:choose",ex);
Element el = xsvgdoc.createElementNS("when","xsl:when");
el.setAttribute("test","contains($a,'test')");
((XMLElement)getit.item(0)).appendChild(whennode);
XSLProcessor processor = new XSLProcessor();
XSLStylesheet xsvgstyle;
xsvgstyle = processor.newXSLStylesheet(xsvgdoc);
your feedback is appreciated, since I am currently stucking on this problem.
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Answer 1

Ensure that the code is correct in all 6 fields. Have you used the "Validate template" feature before previewing to see if you are able to get any more information?
I can take a look at your template if you can send it to [email protected] Send me a sample xml file for testing purposes.
Thanks