[xsl] error in XSL file when using JAXP

[Rahil <qamar_rahil@xxxxxxxxxxx>]

Hi

Im using JAXP to pass the source XML and XSL file to perform the 
transformation task in Java.

However, I get an error in one of the 'next-in-chain'  XSL files which I 
cant understand, as I do not receive this error when I run my 
transformation from the XSL Editor.

The error is :
------------------------
Error at xsl:for-each on line 162 of 
file:/D:/Coding/Samples/Final/CanonicalMapping1.xsl:
 Effective boolean value is not defined for a sequence of two or more 
items starting with
 an atomic value
------------------------

Line 162 in the said file is :
-----------
///CanonicalMapping1.xsl /////
<xsl:for-each select="$ont/SubConcepts/SubConcept">
//first line of file///
<xsl:stylesheet version="2.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; 
xmlns:saxon="http://saxon.sf.net/";>
------------

which looks in-part as such:
----------
///OntFile.xml ($ont) ////
<Top>
  <PrimeConcept id="10180" type="none"/>
  <SubConcepts>
     <SubConcept id="10279" name="Headache">
        <Value type="TEXT" ref="10211">hasLocation Forehead</Value>
        <Value type="TEXT" 
ref="10237">hasSymptomCharacter PainSymptomCharacter</Value>
      </SubConcept>
     <SubConcept id="10237" name="PainSymptomCharacter">
        <ChildConcept ref="10236">HeadacheCharacter</ChildConcept>
     </SubConcept>
     <SubConcept id="10215" name="TemporalPattern">
        <ChildConcept ref="10214">MealPattern</ChildConcept>
        <Value type="TEXT" 
ref="10219">hasAbsoluteState intermittent</Value>
     </SubConcept>
--------------
Im using an XSLT2.0 processor.

Would appreciate any help with this problem.

Thanks
Rahil