'active_id' not in context from view

[Rodolfo Lopez]

1.- 'active_id' not in context from view
context="{'inventory_id':active_id}"

2.- The result you observed

ERROR:tools.expr_eval:{'inventory_id':active_id}
Traceback (most recent call last):
  File "/home/rodo/openerp/instancias/6.1/cliente/bin/tools/__init__.py", line 52, in expr_eval
    temp = eval(string, context)
  File "<string>", line 1, in <module>
NameError: name 'active_id' is not defined

3.- The result you expected
context={'inventory_id':active_id}

4.-The platform your are using
Ubuntu. 12.04, Python 2.7.2+
openerp- addons :7056
openerp- server : 4296
openerp-client: 2099

NOTE: Attached VIDEO with Explain.
Also in: http://youtu.be/IF_Gvdw8jmk