Access Multiple Source Variables in Transform Activity

Question

We have a transform activity that fills a complex type from another complex type that is received from a webservice invoke activity.
One of the nodes in that destination complex type does not exist in the source complex type. The actual value of that destination node exists as a value in the current bpel process wsdl file, but I can't figure out how to set that value in the transform activity.
I've been trying to use the xpath document method to parse an external xml file to grab the node that contains the value. Here is my xsl transformation file. Notice the line that contains the document method call. Does this not work in the BPEL transformations? The error I always receive is.
Invalid XPath expression
Is there another way to access a second source file within a transformation xslt file?
<?xml version="1.0" encoding="UTF-8" ?>
<?oracle-xsl-mapper
  <!-- SPECIFICATION OF MAP SOURCES AND TARGETS, DO NOT MODIFY. -->
  <mapSources>
    <source type="WSDL">
      <schema location="StorePrice.wsdl"/>
      <rootElement name="GetPricingResponse" namespace="http://services.darr.fastenal.com/GetPrice/StorePriceOutput.xsd"/>
    </source>
  </mapSources>
  <mapTargets>
    <target type="WSDL">
      <schema location="TestMobilieQuote.wsdl"/>
      <rootElement name="TestMobilieQuoteProcessResponse" namespace="http://xmlns.oracle.com/TestMobilieQuote"/>
    </target>
  </mapTargets>
  <!-- GENERATED BY ORACLE XSL MAPPER 10.1.2.0.0(build 050923.1500) AT [THU FEB 02 14:10:26 CST 2006]. -->
?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:tns="http://services.darr.fastenal.com/GetPrice/"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/"
xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/"
xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
xmlns:ns0="http://www.w3.org/2001/XMLSchema"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:s1="http://services.darr.fastenal.com/GetPrice/StorePriceOutput.xsd"
xmlns:s0="http://services.darr.fastenal.com/GetPrice/StorePriceInput.xsd"
xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/"
xmlns:plnk="http://schemas.xmlsoap.org/ws/2003/05/partner-link/"
xmlns:client="http://xmlns.oracle.com/TestMobilieQuote"
xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:ldap="http://schemas.oracle.com/xpath/extension/ldap"
xmlns:xp20="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.Xpath20"
xmlns:ora="http://schemas.oracle.com/xpath/extension"
xmlns:orcl="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc"
exclude-result-prefixes=
"xsl tns mime wsdl soap12 http ns0 soap soapenc s1 s0 tm plnk client bpws ldap xp20 ora orcl">
  <xsl:template match="/">
    <client:TestMobilieQuoteProcessResponse>
      <client:result>
        <client:AccountNumber>
          <xsl:value-of select="document('TestMobilieQuote',/)/TestMobilieQuoteProcessRequest/CustomerNumber"/>
        </client:AccountNumber>
        <xsl:for-each select="/s1:GetPricingResponse/s1:GetPricingResult/s1:PricingInformation">
          <client:PartList>
            <client:PartNumber>
              <xsl:value-of select="s1:PartNumber"/>
            </client:PartNumber>
            <client:SellPrice>
              <xsl:value-of select="s1:SellPrice"/>
            </client:SellPrice>
            <client:IsValid>
              <xsl:value-of select="not(xp20:matches(s1:SellPrice,"^0$"))"/>
            </client:IsValid>
          </client:PartList>
        </xsl:for-each>
      </client:result>
    </client:TestMobilieQuoteProcessResponse>
  </xsl:template>
</xsl:stylesheet>

Answer 1

I noticed in my post that I had a copy error for the line in the xsl transformation that I have a question about. Here is the proper line
<xsl:value-of select="document('TestMobilieQuote.wsdl',/)/TestMobilieQuoteProcessRequest/CustomerNumber"/>