settings.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Version information
 *
 * @package    mod_evoting
 * @copyright  2016 Cyberlearn
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die;

require_once($CFG->dirroot . '/mod/evoting/lib.php');

if ($ADMIN->fulltree) {
    $settings->add(new admin_setting_heading('defaults', get_string('modulename', 'evoting'), ''));
    $options = array(
        6 => '6',
        8 => '8',
        10 => '10',
        12 => '12',
        14 => '14',
        16 => '16'
    );
    $settings->add(new admin_setting_configselect('evoting/evoting_number_choice', get_string('numberchoice', 'evoting'),'',
        16, $options));
}