View file PF.Base/module/event/install/version/3.5.0beta1.xml.php
<upgrade>
<sql><![CDATA[a:1:{s:9:"ADD_FIELD";a:1:{s:12:"phpfox_event";a:1:{s:13:"total_dislike";a:4:{i:0;s:7:"UINT:10";i:1;s:1:"0";i:2;s:0:"";i:3;s:2:"NO";}}}}]]></sql>
</upgrade>
<upgrade>
<sql><![CDATA[a:1:{s:9:"ADD_FIELD";a:1:{s:12:"phpfox_event";a:1:{s:13:"total_dislike";a:4:{i:0;s:7:"UINT:10";i:1;s:1:"0";i:2;s:0:"";i:3;s:2:"NO";}}}}]]></sql>
</upgrade>