reporting-engine/report_qweb_pdf_watermark/demo/report.xml

<?xml version="1.0" encoding="UTF-8"?>
<openerp>
    <data>
        <report
            id="demo_report"
            string="Demo report"
            model="res.users"
            report_type="qweb-pdf"
            name="report_qweb_pdf_watermark.demo_report_view"
            file="report_qweb_pdf_watermark.demo_report_view"
            paperformat="report.paperformat_euro"
        />
        <record id="demo_report" model="ir.actions.report.xml">
            <field name="pdf_watermark_expression">docs[:1].company_id.logo</field>
        </record>
        <template id="demo_report_view">
            <t t-call="report.html_container">
                <t t-call="report.external_layout">
                    <div class="page">
                        <ul>
                            <li t-foreach="docs" t-as="doc">
                                <t t-esc="doc.name" />
                            </li>
                        </ul>
                    </div>
                </t>
            </t>
        </template>
    </data>
</openerp>