SSRS XML reformating using xslt during export

step 1. Created xslt file using following code.

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="xml" indent="yes" encoding="utf-8" />
<xsl:template match="Details">
        <Details>
            <xsl:for-each select="@*">
                <xsl:element name="{name(.)}">
                    <xsl:value-of select="." />
                </xsl:element>
            </xsl:for-each>
        </Details>
    </xsl:template>
</xsl:stylesheet> 

Step 2: set Property of report to "datafeed.xslt"

Without applying xslt to my ssrs report result appears like this,

    <Report xsi:schemaLocation="pg_google_data_feed http://reportserver?%2Fpg_google_data_feed&rs%3AFormat=XML&rc%3ASchema=True" Name="pg_google_data_feed">
        <Title>FeedTitle</Title>
        <link>http://www.mydomain.com</link>
        <description>My Products</description>
        <ProductList>
            <Details_Collection>
                <Details>
                    <Id>1000</Id>
                </Details>
                <Details>
                     <Id>1000</Id>
                 </Details>
             </Details_Collection> 
        </ProductList>
    </Report>     

if i attached above mentioned xslt to the report through DataTransform Property, am getting following output.

XML Parsing Error: syntax error
Location: file:///C:/Documents%20and%20Settings/Administrator/Desktop/pg_google_data_feed.xml
Line Number 1, Column 39:<?xml version="1.0" encoding="utf-8"?>1089010947109191093310895108921092406598115141151311512
--------------------------------------^ 

Thank you in advance Sudhakar