Neuer BBCode-Button nicht aktiv

Code:
<link rel="stylesheet" href="{$mybb->asset_url}/jscripts/sceditor/editor_themes/{$theme['editortheme']}" type="text/css" media="all" />

<style type="text/css">

.sceditor-button-ot div  {

    background: url(images/otpng);

}

</style>

<script type="text/javascript" src="{$mybb->asset_url}/jscripts/sceditor/jquery.sceditor.bbcode.min.js?ver=1820"></script>

<script type="text/javascript" src="{$mybb->asset_url}/jscripts/bbcodes_sceditor.js?ver=1819"></script>



<script type="text/javascript" src="{$mybb->asset_url}/jscripts/sceditor/editor_plugins/undo.js?ver=1820"></script>

<script type="text/javascript">

var partialmode = {$mybb->settings['partialmode']},

opt_editor = {

    plugins: "bbcode,undo",

    style: "{$mybb->asset_url}/jscripts/sceditor/textarea_styles/jquery.sceditor.{$theme['editortheme']}?ver=1820",

    rtl: {$lang->settings['rtl']},

    locale: "mybblang",     

    width: "100%",

    enablePasteFiltering: true,

    autoUpdate: true,

    emoticonsEnabled: {$emoticons_enabled},

    emoticons: {

        // Emoticons to be included in the dropdown

        dropdown: {

            {$dropdownsmilies}

        },

        // Emoticons to be included in the more section

        more: {

            {$moresmilies}

        },

        // Emoticons that are not shown in the dropdown but will still be converted. Can be used for things like aliases

        hidden: {

            {$hiddensmilies}

        }

    },

    emoticonsCompat: true,

    toolbar: "{$basic1}{$align}{$font}{$size}{$color}{$removeformat}{$basic2}image,ot,{$email}{$link}|video{$emoticon}|{$list}{$code}quote|maximize,source",

};

{$editor_language}

$(function() {

    $.sceditor.command.set('ot', {

    exec: function() {

        this.insert('[ot]', '[/ot]');

    },

    tooltip: "OffTopic einfügen"

});

    $("#{$bind}").sceditor(opt_editor);



    MyBBEditor = $("#{$bind}").sceditor("instance");

    {$sourcemode}

});

</script>