the field definition in the task form view is :

<field name="user_id" options="{&quot;no_open&quot;: True}" on_change="onchange_user_id(user_id, context)" context="{'default_groups_ref': ['base.group_user', 'base.group_partner_manager', 'project.group_project_user']}"/>

Is the part defining the default value is: "on_change="onchange_user_id(user_id, context)" ?

How would I call the project manager's user_id?