thanks in advance I want to filter rows in tree view according to the value of its child table for ex: in manufacturing order I have machines of two company (companies are in a group) then I need to show the Manufacturing order in both company ) actually its depends on companies of Work-centers if a manufacturing order have machines to be process of 2 companies that should be visible in both companies .... in my case I am customizing open erp for a group of five companies ?