This is a draft of a server action based on a server action created directly via GUI:

<record id="env2" model="ir.actions.server">
 <field name="sequence" eval="5"/>
 <field name="name">test2</field>
 <field name="model_id" ref="model_rest_order"/>
 <field name="condition">True</field>
 <field name="type">ir.actions.server</field>
 <field name="state">code</field>
 <field name="code">
self.write(cr, uid, context=context)
status = 'Pronto'
end_date = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
to_floor = 2
 </field>
 </record>

Obviously when I call it raise an error:

ValueError: "old_api() takes at least 4 arguments (3 given)" while evaluating
u'self.write(cr, uid, context=context)\nstatus = \'Pronto\'\nend_date = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")\nto_floor = \'2\''

And if I add ids, self.write(cr, uid, ids, context=context):

ValueError: "name 'ids' is not defined" while evaluating 
u'self.write(cr, uid, context=context)\nstatus = \'Pronto\'\nend_date = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")\nto_floor = \'2\'' 

I admit I'm not understanding how python should be implemented here nor how new api will be triggered. Work directly on python externally is very simple... What is the correct syntax here?
 

Solved with: self.write(cr, uid, context['active_ids'], {'field':'value'})