How can i make it ?

i make a custome module , the fields are :

many2one invoice_id(refer to customer invoice number), 

many2one order_line (refer to account.invoice.line, the invoice number same as selected invoice_id)

many2one customer_id(refer to partner_id in customer invoice that has the same number as selected item in invoice_id field),and

address field(refer to customer's address in selected invoice_id too)

here's the code :

class faktur(osv.osv):
    _name = 'permohonan.faktur'
    _columns = {

        ''invoice_id': fields.many2one('account.invoice',string='Invoice',domain=[('state','=','paid'),('type','=','out_invoice')],required=True),

        'order_line': fields.many2one('account.invoice.line', string='Order Line', required=True),
        'customer_id': fields.many2one('res.partner', string='Customer',required=True),
        'address': fields.char('Address',23),
    }

here is xml code :

record model="ir.ui.view" id="permohonan_faktur_form_view">
    <field name="name">permohonan.faktur.form</field>
    <field name="model">permohonan.faktur</field>
    <field name="arch" type="xml">
        <form string="Form Permohonan Faktur STNK" version="7.0">
        <group col="2" string="Permohonan Faktur STNK">
            <group >
                <field name="invoice_id" context="{'form_view_ref':'account.invoice_form'}"/>
                <field name="order_line" />
                <field name="customer_id"/>
                <field name="address"/>
              </group>
           </group>
        </form>
    </field>
</record>

i want address and customer_id field onchange when i select invoice_id , i want order_line value defend on selected invoice number..