Problem with xsl:with-param and Objects instances

Hi

    With this source


	<xsl:variable name="container" select="Container:new()"/>

	....
	....
	....

	<xsl:apply-templates select="//components">
		<xsl:with-param name="auxContanier" select="$container"/>
	</xsl:apply-templates>

	<xsl:template match="//components">
		<xsl:param name="auxContainer"/>
		<xsl:value-of
select="Container:addComponent($auxContainer,component:new(@posX,
@posY)))"/>
	</xsl:template>


	when Component is defined as  --
xmlns:Component="/es.telenium.Grafics.Component" --
	when Container is defined as  --
xmlns:Container="/es.telenium.Grafics.Container" --


    i get the next error:

	The firt argument is not a Object instance in <xsl:value-of
select="......."/> ¿why?


regards.


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