Ошибка в сниппете FormItIsSelected. Как исправить?

*****.ru [Wed Aug 28 09:53:42 2013] [error] [client 217.66.158.62] PHP Warning:  in_array() [<a href='function.in-array'>function.in-array</a>]: Wrong datatype for second argument in /home/**/**********/*****/public_html/core/cache/includes/elements/modsnippet/11.include.cache.php on line 39, referer: http://***.*****.ru/

<?php
function elements_modsnippet_11($scriptProperties= array()) {
global $modx;
if (is_array($scriptProperties)) {
extract($scriptProperties, EXTR_SKIP);
}
/**
 * FormIt
 *
 * Copyright 2009-2012 by Shaun McCormick <[email protected]>
 *
 * FormIt 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 2 of the License, or (at your option) any
 * later version.
 *
 * FormIt 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
 * FormIt; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
 * Suite 330, Boston, MA 02111-1307 USA
 *
 * @package formit
 */
/**
 * Custom output filter that returns checked="checked" if the value is set
 *
 * @var string $input
 * @var string $options
 * @package formit
 */
$output = ' ';
if ($input == $options) {
    $output = ' selected="selected"';
}
$input = $modx->fromJSON($input);
if (in_array($options,$input)) {
  $output = ' selected="selected"';
}
return $output;
}

[<a href='function.in-array'>function.in-array</a>]

$input = $modx->fromJSON($input);
if (is_array($input) && in_array($options,$input)) {
  $output = ' selected="selected"';
}