Myself and answer.
If the category is linked to a menu item. This rule also need to bind to it. Here it is:
return (
JRequest::getCmd( 'option' ) == 'com_flexicontent'
&& in_array(JRequest::getCmd( 'view' ), array('item','items'))
&& in_array(JRequest::getInt( 'Itemid' ), array(132))
);
Itemid - this is the id of the menu item
Maybe someone will come in handy!In general, you can add in the FAQ.