account_vat_period_end_statement/wizard/add_period.xml
<?xml version="1.0" ?>
<openerp>
<data>
<record id="add_period" model="ir.ui.view">
<field name="name">add_period</field>
<field name="model">add.period.to.vat.statement</field>
<field name="type">form</field>
<field name="arch" type="xml">
<form string="Add period" version="7.0">
<group>
<label for="period_id"/>
<div>
<field name="period_id" class="oe_inline"></field>
</div>
</group>
<footer>
<button icon="gtk-cancel" special="cancel" string="Cancel"/>
<button icon="gtk-ok" name="add_period" string="Add" type="object"/>
</footer>
</form>
</field>
</record>
<record id="action_add_period" model="ir.actions.act_window">
<field name="name">Add period</field>
<field name="type">ir.actions.act_window</field>
<field name="res_model">add.period.to.vat.statement</field>
<field name="view_type">form</field>
<field name="view_mode">form</field>
<field name="target">new</field>
</record>
</data>
</openerp>