Please i have tried this , but it doesnt work:

<openerp>

<data>

<record id="view_contracts_form_inherit" model="ir.ui.view">

<field name="name">analytic.analytic.account.form.inherit</field>

<field name="model">account.analytic.account</field>

<field name="inherit_id" ref="analytic.view_account_analytic_account_form"/>

<field name="arch" type="xml">

<!--Adds a new page (tab) to the view after the tab Information -->

<xpath expr="//page[@string='Contract Information']" position="after">

<page name="Sample" string="Services">

</page>

</xpath>

</field>

</record>

</data>

</openerp>

Please  help