I wrote an addon which adds a second mail field. But i always got this error when i give my field more than 16 chars.

"DataError: value too long for type character varying(16)"

i dont find a solution, any ideas?

*.py:

from osv import osv, fields from tools.translate import _

class res_partner(osv.osv): _inherit = 'res.partner'

_columns = {
    'thirdmail': fields.char('Private Mailadresse', size=40, help='MoreMail'),
    }

res_partner()

*.xml

<openerp> <data>

    <record id="view_partner_form" model="ir.ui.view">
        <field name="name">res.partner.form</field>
        <field name="model">res.partner</field>
        <field name="type">form</field>
        <field name="inherit_id" ref="base.view_partner_form" />
        <field name="arch" type="xml">
            <field name="email" position="after">
                <field name="thirdmail" />
          </field>
        </field>
    </record>   

</data> </openerp>