Passing Rowkey from an XSL?

Is there a way to pass the rowkey from an xsl stylesheet to a jsp page? I'm trying to use data tags (UPDATE) in a jsp page, however I receive the following error :
javax.servlet.jsp.JspException: RowKey is null, row tag cannot find a row
     void jolene_html.jspUpdate._jspService(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
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Can this be done? or do I have to find some sort of work around for it? Any and All help would be excellent....
Jolene

Could someone please respond to this post for me? Possible
someone from Oracle. I've tried accessing some of the howtos
that are posted throughout the forum on this topic, but they
aren't displaying.... I'm going to post my code for further
clarification.
Many thanks in advance.
My Edit form: (jsp)

<?xml version="1.0"?>
<%@ page language="java" import="oracle.jbo.RowSet"
session="true" buffer="none" autoFlush="true"
isThreadSafe="true" contentType="text/html; charset=ISO-8859-
1" isErrorPage="false" %>
<%@ page language="java" import="java.sql.*" session="true"
buffer="none" autoFlush="true" isThreadSafe="true"
contentType="text/html; charset=ISO-8859-1" isErrorPage="false"
%>
<jsp:useBean class="oracle.jbo.html.databeans.XmlData"
id="xmlDetail" scope="request" >
<%
xmlDetail.setStylesheet("xMyDetail.xsl");
     xmlDetail.setReleaseApplicationResources(false);
     xmlDetail.setDisplayAttributes
("Custid,Name,Address,City,State,Zip,Area,Phone,Repid,Creditlimit
,Comments");
     xmlDetail.initialize
(pageContext,"BC4JTest_BC4JTest_BC4JTestModule.CustomerView");
// Get the rowset from the XmlData data web bean
RowSet r = xmlDetail.getRowSet();
// Set the Where clause on this RowSet's View Object.
String CustomerId=request.getParameter("pCustid");
// Set the Where clause bind variable.
if (CustomerId != null) {
r.setWhereClauseParam(0, CustomerId);
r.getViewObject().setWhereClause("Custid = :0");
r.executeQuery();
xmlDetail.render();
%>
</jsp:useBean>
My XSL file:

<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="*|/"><xsl:apply-templates/></xsl:template>
<xsl:template match="text()|@*"><xsl:value-of
select="."/></xsl:template>
<xsl:template match="/">
<HTML xmlns:jbo="jbo">
          <BODY>
<FORM name="CustomerView_form" action="jspUpdate.jsp">
<b>Add New Customer</b>
               <table width="80%" border="0"
bgcolor="#BDCFDF">
               <xsl:for-each
select="Results/CustomerView">
                    <tr align="left">
<td bgcolor="#BDCFDF">Customer Id:</td>
<td bgcolor="#BDCFDF">
<input type="text" size="10" name="Custid">
<xsl:attribute name="value"><xsl:value-of
select="Custid"/></xsl:attribute></input>
<input type="hidden" size="10" name="_Custid">
<xsl:attribute name="value"><xsl:value-of
select="Custid"/></xsl:attribute></input></td>
<td bgcolor="#BDCFDF">Firstname:</td>
<td bgcolor="#BDCFDF">
<input type="text" size="40" name="Name">
<xsl:attribute name="value"><xsl:value-of
select="Name"/></xsl:attribute></input>
<input type="hidden" size="40" name="_Name">
<xsl:attribute name="value"><xsl:value-of
select="Name"/></xsl:attribute></input></td>
</tr>
<tr>
<td bgcolor="#BDCFDF" width="15%"> </td>
<td bgcolor="#BDCFDF" width="15%"> </td>
<td bgcolor="#BDCFDF">Address:</td>
                         <td bgcolor="#BDCFDF">
<input type="text" size="40" name="Address">
<xsl:attribute name="value"><xsl:value-of
select="Address"/></xsl:attribute></input>
<input type="hidden" size="40" name="_Address">
<xsl:attribute name="value"><xsl:value-of
select="Address"/></xsl:attribute></input></td>
                    </tr>
<tr>
<td bgcolor="#BDCFDF" width="15%">Phone: </td>
<td bgcolor="#BDCFDF" width="15%">
<input type="text" size="3" name="Area">
<xsl:attribute name="value"><xsl:value-of
select="Area"/></xsl:attribute></input>
<input type="hidden" size="3" name="_Area">
<xsl:attribute name="value"><xsl:value-of
select="Area"/></xsl:attribute></input>
<input type="text" size="10" name="Phone">
<xsl:attribute name="value"><xsl:value-of
select="Phone"/></xsl:attribute></input>
<input type="hidden" size="10" name="_Phone">
<xsl:attribute name="value"><xsl:value-of
select="Phone"/></xsl:attribute></input></td>
<td bgcolor="#BDCFDF">City:</td>
                         <td bgcolor="#BDCFDF">
<input type="text" size="40" name="City">
<xsl:attribute name="value"><xsl:value-of
select="City"/></xsl:attribute></input>
<input type="hidden" size="40" name="_City">
<xsl:attribute name="value"><xsl:value-of
select="City"/></xsl:attribute></input></td>
                    </tr>
<tr>
<td bgcolor="#BDCFDF" width="15%">Rep Id:</td>
<td bgcolor="#BDCFDF" width="15%">
<input type="text" size="10" name="Repid">
<xsl:attribute name="value"><xsl:value-of
select="Repid"/></xsl:attribute></input>
<input type="hidden" size="10" name="_Repid">
<xsl:attribute name="value"><xsl:value-of
select="Repid"/></xsl:attribute></input></td>
<td bgcolor="#BDCFDF">State:</td>
                         <td bgcolor="#BDCFDF">
<input type="text" size="05" name="State">
<xsl:attribute name="value"><xsl:value-of
select="State"/></xsl:attribute></input>
<input type="hidden" size="05" name="_State">
<xsl:attribute name="value"><xsl:value-of
select="State"/></xsl:attribute></input></td>
                    </tr>
<tr>
<td bgcolor="#BDCFDF" width="15%">Credit Limit:</td>
<td bgcolor="#BDCFDF" width="15%">
<input type="text" size="20" name="Creditlimit">
<xsl:attribute name="value"><xsl:value-of
select="Creditlimit"/></xsl:attribute></input>
<input type="hidden" size="20" name="_Creditlimit">
<xsl:attribute name="value"><xsl:value-of
select="Creditlimit"/></xsl:attribute></input></td>
<td bgcolor="#BDCFDF">Zip Code:</td>
                         <td bgcolor="#BDCFDF">
<input type="text" size="10" name="Zip">
<xsl:attribute name="value"><xsl:value-of
select="Zip"/></xsl:attribute></input>
<input type="hidden" size="10" name="_Zip">
<xsl:attribute name="value"><xsl:value-of
select="Zip"/></xsl:attribute></input></td>
                    </tr>
          </xsl:for-each>
</table>
               <table width="80%" border="0"
bgcolor="#BDCFDF">
               <xsl:for-each
select="Results/CustomerView">
<tr>
<td bgcolor="#BDCFDF" width="11%">Comments:</td>
<td bgcolor="#BDCFDF" width="55%">
<input type="text" size="80" name="Comments">
<xsl:attribute name="value"><xsl:value-of
select="Comments"/></xsl:attribute></input>
<input type="hidden" size="80" name="_Comments">
<xsl:attribute name="value"><xsl:value-of
select="Comments"/></xsl:attribute></input></td>
<td bgcolor="#BDCFDF" width="0%"></td>
<td bgcolor="#BDCFDF" width="0%"></td>
</tr>
</xsl:for-each>
</table>
<p align="left"></p>
          <input type="submit"
value="Update"></input>
<input type="submit" value="Cancel"></input>
</FORM>
          </BODY>
     </HTML>
     </xsl:template>
<xsl:apply-templates/>
</xsl:stylesheet>
My Update jsp
String MyRowKey= request.getParameter("Custid");
out.println(MyRowKey);
%>-->
<jbo:Row id="myRow" datasource="ds" action="Current"
</jbo:Row><%
String myValue = ds.getRowKey(myRow);
// Object myName = myRow.getAttribute("Ename");
out.println( myValue );
%>
<jbo:Row id="myFind" datasource="ds" rowkeyparam="<%=myValue%
" action="Find" ></jbo:Row>
<jbo:Row id="myrow" datasource="ds" action="Update">
<jbo:SetAttribute dataitem="*"/>
</jbo:Row>
<P>
<b>Posting Changes...</b>
</P>
<jbo:PostChanges appid="BC4JTest.BC4JTestModule"/>
<P>
<b>Committing Changes...</b>
</P>
<jbo:Commit appid="BC4JTest.BC4JTestModule"/>
<%
catch(Exception exc)
out.println("<pre>");
exc.printStackTrace(new java.io.PrintWriter(out));
out.println("</pre>");
%>
<P>
Click here to continue
</P>
</center>
</body>
<jbo:ReleasePageResources releasemode="Stateless"/>
</html>

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Query string: can't use this because portlets on remote servers don't have access to it
Cookies: if user disables cookies, code will not function properly
Session variables: limited to one user's connection with one portlet (i.e., can't access a session variable set in portletA from portletB)
Application variables: because the user may not be logged in, I have no way of uniquely naming variables, which is a necessity in order to maintain state for EACH user
User Settings: again, the user may not be logged in, so I can't use these
PCC: can't access client-side variables because server-side JSP executes first
Are my assumptions above correct? Has anyone had any success using one of these methods given the same constraints, or does anyone have an alternative solution? I'd certainly appreciate any help anyone could provide.
Thanks,
Jose

One possibility would be to use a Login PEI to set a unique UserInfo Name/Value for the user. I think in 5.0 each guest session is unique, so would have unique UserInfo. Then you could pass this value to your portlet (by specifying it in the web service) and use it as a key into a Application-scoped hashmap where you store your info. In other words, your Application variables option, but you have a way of uniquely naming your variables via PEI-set UserInfo.

Passing Rowkey from an XSL?

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