hey everybody , can anyone help me with the field many2one ??? in my module i have a field with a drop down list where i want to show all the names of my patients already registered in my database ... Plzzzz help meee

my python file :

class medical(osv.osv): _name='medical' _description='dossier medical du patient'

_columns={
            #info general
            'name' : fields.many2one('patient.name', 'name'),

} medical()

my xml file :

<field name="name" domain="[('name','=','name')]"/>

Just as specification i want to get the field "name" from the class : patient

_name='patient'
_description='dossier administratif du patient'
_columns={
            'name' : fields.char('numero d`adhesion', size=30,   required=True),

} patient()