Saxon

Please, I need some help dealing with saxon api :) I create a pipeline with 2 XsltTransform of the same xslt and when i run transform i get this error :

2019-01-24 11:32:15,673 [pool-2-thread-1] INFO e.s.e.x.XsltListener - file
2019-01-24 11:32:15,674 [pool-2-thread-1] INFO e.s.e.x.XsltListener - Error 
XPDY0002 while evaluating xsl:message content: The context item for axis 
step fn:root(...)/element() is absent
here is my xslt :

<xsl:stylesheet exclude-result-prefixes="#all" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0">
<xsl:variable name="supp" as="xs:string" select="root()/*/name()"/>

<xsl:template match="/">
    <xsl:message select="$supp"/>
    <file/>
</xsl:template>
</xsl:stylesheet>

the first XsltTransform work fine but It seems that i have no context node during the second XstTransform running.

I use :

transformer1.setSource(source) : source is a SAXSource

transformer1.setDestination(transformr2)

transformr2.setDestination(serialiser)

According to documentation (XsltTransform.setInitialContextNode): This value is ignored in the case where the XsltTransformer is used as the Destination of another process. In that case the initial context node will always be the document node of the document that is being streamed to this destination.

Thanks for your Help