diff --git a/sub_project/models/sub_project.py b/sub_project/models/sub_project.py
index 6e3e72f..d83c945 100755
--- a/sub_project/models/sub_project.py
+++ b/sub_project/models/sub_project.py
@@ -10,16 +10,15 @@ class SubProject(models.Model):
                                    domain="[('is_sub_project', '=', True)]", string='Sub Project')
     parent_project = fields.Many2one('project.project', domain="[('is_sub_project', '=', False)]", string='Parent Project')
 
-    @api.depends('sub_project')
+    @api.onchange('parent_project', 'sub_project')
     def onchange_parent_project_sub_project(self):
-        for record in self:
-            if record.sub_project:
-                print('111111111', record.sub_project)
-                for rec in record.sub_project:
-                    print('2222222', rec, record.id, record._origin.id)
-                    #print('2222222AAAAAAAAAAAA', rec.parent_project)
-                    #rec.write({'parent_project' : record._origin.id})
-                    # print('3333333', rec.parent_project)
+        if self.sub_project:
+            for rec in self.sub_project:
+                #print('AAAAAAAAAAA', rec, rec._origin.id)
+                sub_project = self.env['project.project'].search([('id', '=', rec._origin.id)], limit=1)
+                #print('BBBBBBBBBBB', sub_project, self._origin.id)
+                sub_project.write({'parent_project': self._origin.id})
+
 
 
 class InheritProjectTask(models.Model):
diff --git a/sub_project/views/sub_project.xml b/sub_project/views/sub_project.xml
index 925a097..497e85d 100755
--- a/sub_project/views/sub_project.xml
+++ b/sub_project/views/sub_project.xml
@@ -12,7 +12,7 @@
                         <field name="is_sub_project" invisible="1"/>
                     </xpath>
                     <xpath expr="//field[@name='allowed_internal_user_ids']" position="after">
-                        <field name="parent_project" attrs="{'invisible': [('is_sub_project', '=', False)], 'required': [('is_sub_project', '=', True)]}"/>
+                        <field name="parent_project" attrs="{'invisible': [('is_sub_project', '=', False)]}"/>
                     </xpath>
                     <xpath expr="//field[@name='allowed_internal_user_ids']" position="after">
                         <field name="sub_project" widget="many2many_tags" attrs="{'invisible': [('is_sub_project', '=', True)]}"