Hello,
  I need to modify the following so the Key elements
will only exist when there is a value assigned to
parameter.

  Thanks,
   Chris


<xsl:stylesheet version="2.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:output method="xml"
omit-xml-declaration="yes"/>
    <xsl:param name="catalogName"/>
    <xsl:param name="productid"/>
    <xsl:param name="shortdesc"/>
    <xsl:param name="packsize"/>
    <xsl:param name="category"/>
    <xsl:param name="major"/>
    <xsl:param name="intermediate"/>
    <xsl:param name="minor"/>
    <xsl:param name="trueVendor"/>
    <xsl:param name="gtin"/>
    <xsl:param name="mpc"/>
    <xsl:param name="itemType"/>
    <xsl:param name="packSize"/>


<xsl:template match="/">
     <DataService>
	<Identity>
		<DirectoryPath>
			<Directory type="Enterprise">Alpha</Directory>
			<Directory type="User">admin</Directory>
		</DirectoryPath>
		<Authentication>admin</Authentication>
	</Identity>

	<Transaction>
		<Command type="Query">
			<MasterCatalogRecord etype="Entity">
				<ExternalKeys>
					<Key name="MASTERCATALOGNAME"
type="string"><xsl:value-of
select="$catalogName"/></Key>
					<Key name="PRODUCTID" type="string"><xsl:value-of
select="$productid"/></Key>
					<Key name="SHORTDESC" type="string"><xsl:value-of
select="$shortdesc"/></Key>
					<Key name="SUPCCATEGORY"
type="string"><xsl:value-of select="$category"/></Key>
					<Key name="SUPCMAJORCLASS"
type="string"><xsl:value-of select="$major"/></Key>
					<Key name="SUPCINTERMEDIATECLASS"
type="string"><xsl:value-of
select="$intermediate"/></Key>
					<Key name="SUPCMINORCLASS"
type="string"><xsl:value-of select="$minor"/></Key>
					<Key name="MANUFACTURER"
type="string"><xsl:value-of
select="$trueVendor"/></Key>
					<Key name="EXTERNAL_PRODUCT_CODE"
type="string"><xsl:value-of select="$gtin"/></Key>
					<Key name="MFR_PRODUCT_CODE"
type="string"><xsl:value-of select="$mpc"/></Key>
					<Key name="ITEM_TYPE" type="string"><xsl:value-of
select="$itemType"/></Key>
					<Key name="PACK_SIZE" type="string"><xsl:value-of
select="$packSize"/></Key>
				</ExternalKeys>
			</MasterCatalogRecord>
		</Command>
	</Transaction>
     </DataService>
</xsl:template>
	
</xsl:stylesheet>



 
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