Cannot create acf table field programmatically

Hi,

Great plugin. Saved me a lot of time.
I’m trying to create a table field programmatically but for some reason it’s not working. Here is part of my code.

register_field_group(array (
        'id' => 'acf_test-table',
        'title' => 'Test table',
        'fields' => array (
          array (
            //'key' => 'field_568a92ec26958',
            'key' => 'test_table',
            'label' => 'TestTable',
            'name' => 'test_table',
            'type' => 'table',
            'use_header' => 1,
          ),
          array (
            'key' => 'field_5323276db7e18',
            'label' => 'Email Address',
            'name' => 'email_address',
            'type' => 'email',
            'required' => 1,
            'default_value' => '',
            'placeholder' => '',
            'prepend' => '',
            'append' => '',
          ),
        ),
        'location' => array (
          array (
            array (
              'param' => 'post_type',
              'operator' => '==',
              'value' => 'post',
              'order_no' => 0,
              'group_no' => 0,
            ),
          ),
        ),
        'options' => array (
          'position' => 'normal',
          'layout' => 'default',
          'hide_on_screen' => array (
          ),
        ),
        'menu_order' => 4,
      ));

The test e-mail address field is created. However, the table field isn’t.

Hope you can help me.
Thanks,
Sharif.

https://www.ads-software.com/plugins/advanced-custom-fields-table-field/