odoo/addons/mrp/wizard/change_production_qty_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        
        <!--  Change Product Quantity -->
        
		<record id="view_change_production_qty_wizard" model="ir.ui.view">
            <field name="name">Change Product Qty</field>
            <field name="model">change.production.qty</field>
            <field name="type">form</field>
            <field name="arch" type="xml">
                <form string="Change Product Qty">
                    <separator string="Change Quantity" colspan="4"/>
                    <newline/>
				    <field name="product_qty"/>
				    <newline/>
				    <separator colspan="4"/>
				    <group col="2" colspan="4">
                		<button icon='gtk-stop' special="cancel"
                			string="Cancel" />
                		<button name="change_prod_qty" string="Approve"
                			colspan="1" type="object" icon="gtk-ok" />
                	</group>
                </form>
            </field>
        </record>

        <record id="action_change_production_qty" model="ir.actions.act_window">
            <field name="name">Change Product Qty</field>
            <field name="type">ir.actions.act_window</field>
            <field name="res_model">change.production.qty</field>
            <field name="view_type">form</field>
            <field name="view_mode">form</field>
            <field name="target">new</field>            
        </record>
       
	</data>
</openerp>