<Command>
<Setting name="enablerScript">
<![CDATA[
(function(notifications, name, value){
return notifications.map(function(notification) {
var tag = notification.userTags.filter(function(tag) {
return tag.name === name;
});
return tag.length == 0 || tag[0].value== 'false';
}).indexOf(true) > -1
})(notification, 'xfav');
]]>
</Setting>
</Command>