[xsl] nested xsl:choose?

Hi,

Does XALAN support nested xsl:choose statements like this...

<xsl:choose>
    <xsl:when test.....>
         --- other statements ---
    </xsl:when>
    <xsl:otherwise>
           <xsl:choose>
                   <xsl:when test....>
                        --- other statements ---
                   </xsl:when>
                   <xsl:otherwise>
                        --- other statements ---
                    </xsl:otherwise>
           </xsl:choose>
    </xsl:otherwise>
</xsl:choose>

I am getting the following error: 
[Fatal Error] test.xslt:91:11: The element type "xsl:otherwise" must be
terminated by the matching end-tag "</xsl:otherwise>".  I have verified that
all tags have matching end tags and they are all nested at the correct
level.  Is this a bug in the XSLT processor or is this type of nesting
unsupported?

Thanks much.
Kevin

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