Hello, I'm a beginner in database and I'm customing my sale order report. I don't work with Python, only XML Qwebs.

I added a manytoone field "x_contact" in sale.order.form where I can choose one of my differents contacts,  then I wrote in report_invoice_document "<span t-field="doc.x_contact"/>.

I would like to insert a field in the report, which can bring me the contact phone, automatically.

My goal : display contact informations in the report, only by filling x_contact in the sale order form.

How can I write the <span t-field> ? Is it possible ?

Thank you