XSLT - Build XML from parameters -

im trying build xml parameters, named as:
p_nodes: contain data (string separated comas) of nodes xml
p_data: contain data (string separated comas) of going inside node.

so far got this:

 <?xml version="1.0" encoding="utf-8"?> <xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/xsl/transform">     <xsl:param name="p_nodes"/>     <xsl:param name="p_data"/>     <xsl:template match="/">                 <xsl:for-each select="tokenize($p_nodes,',')">               <xsl:variable name="elemname" select="normalize-space(.)"/>             <xsl:variable name="pos" select="position()"/>             <xsl:element name="{$elemname}">                                                     <xsl:value-of select="tokenize($p_data,',')[position()=$pos]"/>                          </xsl:element>         </xsl:for-each>     </xsl:template> </xsl:stylesheet> 

applying parameters:

p_nodes: number,address,name,numdoc
p_data: 123,principal av,alberto,456

the output got this:

<?xml version="1.0" encoding="utf-8"?> <number>123</number> <address>principal av</address> <name>alberto</name> <numdoc>456</numdoc> 

so working fine, @ point.

what i'm trying achive tranformation using upper cases identified parent nodes this:

p_nodes: document,header,number,address,name,numdoc,/header,detail,description,/detail,/document
p_data: 123,principal av,alberto,456,example description

output xml

<?xml version="1.0" encoding="utf-8"?> <document>     <header>         <number>123</number>         <address>principal av</address>         <name>alberto</name>         <numdoc>456</numdoc>     </header>     <detail>         <description>example</description>     </detail>    </document> 

please let me know if i'm not being totally clear question.

thanks in advance guys!

-keva