fluent form users list in dropdown input

ff-user-list-filter.php

/*
* 1. Add this in function.php file
* 2. Change form ID
* 3. Change input attribute name 
*/

add_filter('fluenform_rendering_field_data_select', function ($data, $form) {
     if ($form->id != 91) {
         return $data;
     }

    //default name of the dropdown input is 'dropdown'
    if (\FluentForm\Framework\Helpers\ArrayHelper::get($data, 'attributes.name') != 'dropdown') {
       return $data;
    }
    
    $blogusers = get_users();
    // Array of WP_User objects.
    foreach ( $blogusers as $user ) {
        $array[] = array("label"=>$user->display_name, "value"=>$user->display_name, "calc_value"=>"");
    }
    
    // We are merging with existing options here
    $data['settings']['advanced_options'] = array_merge($data['settings']['advanced_options'],  $array);
    return $data;
}, 10, 2);