Hi. I created a model called PC that has a Many2One field called  x_studio_pc_owner which lets you define who owns the PC. My customer model has a custom One2Many relationship which shows which PCs it owns.

In my invoice, I want to choose a PC, only if my customer owns it.

I tried setting up a domain rule in the Invoice Many2One field but it does not work.

I tried this: [('x_studio_pc_owner','=','parent.partner_id')] to see if it would filter my results but it returns nothing.

Please help!