Hello:
Please, i want to add a field in the class "account invoice" but under this:
<notebook colspan="4">
<page string="Invoice Lines">
<field name="invoice_line" nolabel="1" widget="one2many_list" context="{'type': type}">
<tree string="Invoice Lines" editable="bottom">
<field name="field"/>
Howcan i use xpath to locate it please.
Thanks a lot in advance