title: Writing a domain with a Many2one field
body: <p>Ok, I'm working with multi company and on my form I have company_ids.  I'm trying to hide another field based on the values in company_ids.  Here is what i've tried.</p>
  
  <pre><code>attrs="{'invisible': [('company_ids', '!=', [(6, False, [3])])]}"
  attrs="{'invisible': [('company_ids', '!=', 3)]}"
  attrs="{'invisible': [('company_ids', 'not in', [3])]}"
  attrs="{'invisible': [('company_ids', 'child_of', [(6, False, [4])])]}"
  attrs="{'invisible': [('company_ids', 'child_of', [4])]}"
  attrs="{'invisible': [('company_ids', 'not in', 3])]}"
  attrs="{'invisible': [('company_ids', '!=', '3']}"
  attrs="{'invisible': [('company_ids', '!=', 'Company Name')]}"
  </code></pre>
  
  <p>I can't figure out why I cannot get this to work.  All of the above just hide the field.</p>