I am stuck in a situation and unable to resolve. Here is the scenario.

I have one `many2one` field named `Parent`, it has `title' that is `many2one` from other module. `Parent` also has another `one2many` field named `subproject`

`Subproject` has title `Question`, which should be filtered from `Parent`'s `title`. Question is also `many2one` field. I have defined it in another module.

I am unable to load subprojects(Question) filtered according to select from Parent(title)

My Parent python loos like:

    class parent_page(osv.osv):
        _name = 'parent.page'
        _description = 'Parent Pages'
        _rec_name = 'title'
        _order = 'sequence'
        _columns = {
            'title': fields.many2one('Project.form', 'Project'),
            'parent_id': fields.many2one('parent', 'Parent', ondelete='cascade'),
            'question_ids': fields.one2many('parent.question', 'page_id', 'Question'),
            'sequence': fields.integer('Page Nr'),
            'note': fields.text('Description'),
        }
    parent_page()

My subProject python file looks like this:

    class parent_question(osv.osv):
        _name = 'parent.question'
        _description = 'Parent Question'
        _rec_name = 'question'
        _order = 'sequence'
        _columns = {
            'page_id': fields.many2one('parent.page', 'Parent Page', ondelete='cascade', required=1),
            'question': fields.many2one('subproject.form', 'Question'), ########  I want it to be filtered from parent title i.e project
        }

My project and subproject python is as follows:

    class project_form(osv.osv):
        _name="project.form"
        _columns={
            'name':fields.char("Projects",size=128),
            'emp_id': fields.many2one('hr.employee','Employee Name')
        }
    project_form()
    
    class subproject_form(osv.osv):
        _name="subproject.form"
        _columns={
            'name':fields.char("Form",size=128),
            'project_id':fields.many2one('project.form','Project')
        }
    subproject_form()

I tried to use domain in xml but got nothing. same with value.

Please point me to right direction.

Note: Sorry for naming of modules as someone else was working on this and i had to continue it.