Create Matter with assigned_lists

[babarab...@gmail.com]

Hi,

I want to create a matter by assigning task_templates list with matter.
But not been successfull.
Here is how my object looks like.

App\Controller\matter Object
(
    [client_id] => 111111111
    [description] => fname lname, Category, test
    [status] => Open
    [practice_area] => Array
        (
            [id] => 0000000
        )

    [billing_method] => flat
    [flat_rate_rate] => 111
    [assigned_lists] => Array
        (
            [0] => Array
                (
                    [task_template_list_id] => 22222
                    [name] => Task List Name
                    [created_at] => 2018-02-21T00:26:27+00:00
                )

        )

)

{"matter": {"client_id":111111111,"description":"fname lname, Category, test","status":"Open","practice_area":{"id":0000000},"billing_method":"flat","flat_rate_rate":111,"assigned_lists":[{"task_template_list_id":22222,"name":"Task List Name","created_at":"2018-02-21T00:26:27+00:00"}]}}

The matter gets created, but no task is associated with it.

Kindly guide on this.