I have a schema:

tnij.org/schema1

There are not all tables included in that project, but this should be enough.

I have a problem. I want to make that user can choose an attribute and then choose value (connected with attribue).

For example Color: Red, Blue, Green, Yellow Size: 21, 22, 23, 24.

How can I do this with that schema? By now I added third function field to product_attribute_value that gives me all releated_attributes connected with value in which I am,. Problem is that in OpenErp cant make domain="[('related_attributes','=',attribute_id)] "lists"="int"

Have you any idea how to solve it?