I have 2 lists, i am populating the first list with an array, and then dragging and dropping between the lists.
i need to get the data from those lists, after someone moves something between them. I think im on the right track, i have plugin.php, admin.js, and my-ajax.php
i need to somehow post data from admin.js to my-ajax.php

This is the relevant stuff from the plugin.php(i can post the whole thing if needed its just to make the lists)

2. wp_register_script('admin-js', plugin_dir_url(__FILE__) . '/admin.js', array('jquery'), '', true);
3. wp_localize_script( 'admin-js', 'dtAjax', array( 'ajaxurl' => plugins_url('my-ajax.php', __FILE__)));
4. wp_enqueue_script('admin-js');
5. wp_enqueue_script('jquery');
6. wp_enqueue_script( 'jquery-ui-sortable' );
8. register_setting( 'settings-group', 'filter_fields_order' );
9. register_setting( 'settings-group', 'filter_fields_order2' );
10. 
    
11. function plugin_options_page() {
12. $fields_order_default = array(
13. 0 => array(
14. 'id' => '0',
15. 'name' => 'List Item 1',
16. 'slug' => 'list_item_1'
17.                 ),
18.                 1 => array(
19.                     'id' => '1',
20.                     'name' => 'List Item 2',
21.                     'slug' => 'list_item_2'
22.                 ),
23.                 2 => array(
24.                     'id' => '2',
25.                     'name' => 'List Item 3',
26.                     'slug' => 'list_item_3'
27.                 ),
28.      );
29.         ?>
30. <ul id="sortable3" class="filter-fields-list" >
31.         <?php 
32. foreach($filter_fields_order as $value) { ?>
33.         <?php 
34.         if(isset($value['id'])) { $id = $value['id']; }
35.         if(isset($value['name'])) { $name = $value['name']; }
36. if(isset($value['slug'])) { $slug = $value['slug']; }
37.                 ?>
38. <li class="sortable-item">
39.                 <?php echo $name; ?>
40.             <input type="hidden" name="filter_fields_order[<?php echo $id; ?>][id]"                               value="<?php echo $id; ?>" />
41. <input type="hidden" name="filter_fields_order[<?php echo $id; ?>][name]"                               value="<?php echo $name; ?>" />
42. <input type="hidden" name="filter_fields_order[<?php echo $id; ?>][slug]"                               value="<?php echo $slug; ?>" />
43.             </li>
44. <?php } ?>
45.         </ul>
46. <ul id="sortable4" class="filter-fields-list">
47. <?php 
48. foreach($filter_fields_order2 as $value) { ?>
49.         <?php 
50.         if(isset($value['id'])) { $id = $value['id']; }
51.         if(isset($value['name'])) { $name = $value['name']; }
52. if(isset($value['slug'])) { $slug = $value['slug']; }
53.         ?>
54. <li class="sortable-item">
55.             <?php echo $name; ?>
56. <input type="hidden" name="filter_fields_order2[<?php echo $id; ?>][id]"                               value="<?php echo $id; ?>" />
57. <input type="hidden" name="filter_fields_order2[<?php echo $id; ?>][name]"                               value="<?php echo $name; ?>" />
58. <input type="hidden" name="filter_fields_order2[<?php echo $id; ?>][slug]"                               value="<?php echo $slug; ?>" />
59.             </li>
60. <?php } ?>
61.         </ul>
62. <?php
63. }

this is the jQuery admin.js

2. jQuery(document).ready(function($){
3. $(document).ready(function() {
4. $('#sortable3, #sortable4').sortable({
5.         connectWith: ".filter-fields-list",
6.     stop: function (event, ui) {
7.         var data = $(this).sortable('serialize');
8.                   alert(data);
9.         $.ajax({
10.                   data: data,
11.                   type: 'POST',
12.                   url: dtAjax.ajaxurl,
13.                       failure: function(data) {
14.     alert("You suck");
15.   },               
16.                       success: function(data) {
17.     alert("You Dont");
18.   }
19.         });
20.     }
21. }).disableSelection();
22. });
23. });

besides plugin.php and admin.js i have my-ajax.php,

1. <?php
   return;