function yasr_check_import_set_callback()
{
    $multi_set_names = yasr_import_gdstar_multi_set();
    echo "<div class=\"yasr-result-step-2\">";
    //If multiple set are found
    if ($multi_set_names) {
        echo "<br /><strong>";
        _e("I've found Multiple Set! Importing...", 'yet-another-stars-rating');
        echo "</strong><br />";
        //If multi set are found write in yasr_multi_set table
        $insert_multi_set = yasr_insert_gdstar_multi_set($multi_set_names);
        //If insert succes, go ahed
        if ($insert_multi_set) {
            echo "&nbsp;&nbsp;&nbsp;";
            _e("Multi Set's name has been successfull imported.", 'yet-another-stars-rating');
            echo "<br /><strong>";
            _e("Now I'm going to import Multi Set data", 'yet-another-stars-rating');
            echo "</strong> <br />";
            //Import multiple set's values from GD star rating
            $multi_data = yasr_import_gdstar_multi_value();
            //If set values are found, insert Gd Star multi values in yasr_multi_values
            if ($multi_data) {
                $insert_multidata = yasr_insert_gdstar_multi_value($multi_data);
                if ($insert_multidata) {
                    echo "&nbsp;&nbsp;&nbsp;";
                    _e("All votes has been successfull imported.", 'yet-another-stars-rating');
                    echo "<br />";
                    echo "<button href=\"#\" class=\"button-delete\" id=\"end-import\">" . __('Done', 'yet-another-stars-rating') . "</button>";
                } else {
                    echo "&nbsp;&nbsp;&nbsp;";
                    _e("I've found Multiple Set's votes but I couldn't insert into db", 'yet-another-stars-rating');
                    echo "<br />";
                }
            } else {
                echo "&nbsp;&nbsp;&nbsp;";
                _e("I've found Multi Set but with no data", 'yet-another-stars-rating');
                echo "<br />";
            }
        } else {
            echo "&nbsp;&nbsp;&nbsp;";
            _e("I've found Multi Sets names but I couldn't insert into db", 'yet-another-stars-rating');
            echo "<br />";
        }
    } else {
        echo "&nbsp;&nbsp;&nbsp;";
        _e("Multisets were not found. Imported is done!", 'yet-another-stars-rating');
    }
    echo "</div>";
    die;
}
function yasr_import_gdstar_multi_value()
{
    global $wpdb;
    $table_gdsr_multis_values = $wpdb->prefix . 'gdsr_multis_values';
    $table_gdsr_multis_data = $wpdb->prefix . 'gdsr_multis_data';
    $table_gdsr_multis = $wpdb->prefix . 'gdsr_multis';
    $multi_set_data = $wpdb->get_results(" SELECT d.post_id,  \n\t\t\t\t\t\t\t v.user_votes, v.item_id, \n\t\t\t\t\t\t\t m.multi_id\n\t\t\t\t\t\t\t FROM {$table_gdsr_multis_values} AS v, {$table_gdsr_multis_data} AS d, {$wpdb->posts} AS p, {$table_gdsr_multis} AS m\n\t\t\t\t\t\t\t WHERE v.id = d.id\n\t\t\t\t\t\t\t AND 0 <> (\n\t\t\t\t\t\t\t SELECT SUM( user_votes )\n\t\t\t\t\t\t\t FROM {$table_gdsr_multis_values} AS tabin\n\t\t\t\t\t\t\t WHERE tabin.id = v.id )\n\t\t\t\t\t\t\t AND p.ID = d.post_id\n\t\t\t\t\t\t\t AND d.multi_id = m.multi_id\n\t\t\t\t\t\t\t AND p.post_status = 'publish'\n\t\t\t\t\t\t\t AND v.source = 'rvw' \n\t\t\t\t\t\t\t ORDER BY d.post_id, m.multi_id, v.item_id ASC ");
    //Import multi set name: if a multiset use != 5 stars,
    //then i search wich vote has that set and convert
    //the vote to fit 5 stars vote
    $old_multi_set = yasr_import_gdstar_multi_set();
    foreach ($old_multi_set as $multi_set) {
        //Search wich set not use 5 stars
        if ($multi_set->stars != 5) {
            //Search in the $multi_set_data if some vote use a set with !=5 stars
            foreach ($multi_set_data as $data_row) {
                if ($data_row->multi_id == $multi_set->multi_id) {
                    $data_row->user_votes = $data_row->user_votes / $multi_set->stars * 5;
                    //Vote convertion
                }
            }
            //End foreach $multi_set_data
        }
        //End if $multi_set->stars != 5
    }
    return $multi_set_data;
}