xquery:xupdate insert problem

<p:processor name="oxf:unsafe-xslt">
        <p:input name="data" href="#params"/>
        <p:input name="config">
			<xforms:submission xsl:version="2.0" method="post"
                               resource="{pipeline:property('oxf.fr.persistence.service.exist.uri')}/{/*/*/app}/{/*/*/form}/data" replace="instance">
				<!-- Move resulting <document> element as root element -->
                <xforms:insert ev:event="xforms-submit-done" nodeset="/*" origin="/*/*[1]"/>
                <!-- Copy eXist error -->
                <xforms:action ev:event="xforms-submit-error">
                    <xforms:delete while="/*/*" nodeset="/*/*"/>
                    <xforms:setvalue ref="/*" value="event('response-body')"/>
                    <xforms:message level="xxforms:log-debug"><xforms:output value="event('response-body')"/></xforms:message>
                    <!-- TODO: Propagate error to caller -->
                </xforms:action>
            </xforms:submission>
        </p:input>
        <p:output name="data" id="submission"/>
    </p:processor>

<p:processor name="oxf:xslt">
        <p:input name="data" href="#archibus-result"/>
        <p:input name="query" href="../data-access/xquery/insert-user-info2.xml"/>
        <p:input name="config">
            <xsl:stylesheet version="2.0" exclude-result-prefixes="oxf xxforms ev xforms pipeline p">
                <xsl:import href="oxf:/oxf/xslt/utils/copy.xsl"/>
                <!-- Get query and apply templates -->
                <xsl:variable name="query" select="doc('input:query')"/>
                <xsl:variable name="instance" select="/*" as="element()"/>
                <xsl:template match="/">
                    <xsl:apply-templates select="$query/*"/>
                </xsl:template>
                <!-- Dynamically build where clause -->
                <xsl:template match="where">
					$resource-id = &quot;<xsl:value-of select="$instance/user/@doc"/>&quot;
                </xsl:template>
				<!-- Dynamically build insert clause -->
				<xsl:template match="insert">
					<info>
						<xsl:copy-of select="$instance/user/child::*[name() != 'name-last']"/>
					</info>
                </xsl:template>
				<!-- Dynamically build result clause -->
				<xsl:template match="result">
					<result><doc id="{$instance/user/@doc}"/></result>
                </xsl:template>
            </xsl:stylesheet>
        </p:input>
        <p:output name="data" id="request"/>
    </p:processor>

<exist:query xmlns:exist="http://exist.sourceforge.net/NS/exist">
    <exist:text>
        <![CDATA[
        xquery version "1.0";
        declare namespace xmldb="http://exist-db.org/xquery/xmldb";
        declare namespace request="http://exist-db.org/xquery/request";
        declare namespace text="http://exist-db.org/xquery/text";
        declare namespace util="http://exist-db.org/xquery/util";
		
		let $doc :=     (for $resource in collection()
				let $resource-uri := document-uri($resource)
				let $collection-name := string-join(tokenize($resource-uri, '/')[position() lt last()], '/')
				let $resource-name := tokenize($resource-uri, '/')[last()]
				let $resource-id := tokenize($resource-uri, '/')[last() - 1]
				where exists($resource/*) and $resource-name = ('data.xml')
				and ]]><where/><![CDATA[
				return document-uri($resource))

        let $toinsert := ]]><insert/><![CDATA[
		let $insert := (update insert $toinsert into doc($doc)/form/internal)
		
		return ]]><result/><![CDATA[
        ]]>
    </exist:text>
</exist:query>

 xquery version "1.0"; 
        declare namespace xmldb="http://exist-db.org/xquery/xmldb"; 
        declare namespace request="http://exist-db.org/xquery/request"; 
        declare namespace text="http://exist-db.org/xquery/text"; 
        declare namespace util="http://exist-db.org/xquery/util"; 
                
                let $doc :=     (for $resource in collection() 
                                let $resource-uri := document-uri($resource) 
                                let $collection-name := string-join(tokenize($resource-uri, '/')[position() lt last()], '/') 
                                let $resource-name := tokenize($resource-uri, '/')[last()] 
                                let $resource-id := tokenize($resource-uri, '/')[last() - 1] 
                                where exists($resource/*) and $resource-name = ('data.xml') 
                                and 
                                        $resource-id = "2c0f2f3fcc995ec25551b9bf494d2aad" 
                
                                return document-uri($resource)) 

                let $insert := (update insert <info><dir-label>Direction Innovation et Outils</dir-label></info> into doc($doc)/form/internal)
                
                return <result><doc id="2c0f2f3fcc995ec25551b9bf494d2aad"/></result>