We frequently get questions about the filter settings in Custom Audiences and Custom Conversions. In Facebook, sometimes, the event types or parameter names (like content_ids, content_name etc.) don't show up there when you try to select them.
The reason for this is that these menus are dynamic and content sensitive. The event and parameter names will be displayed once you have generated data for them with traffic on your page.
For Custom Audiences, you can use the Custom Audience Builder in Trackify to create Custom Audiences for any event and parameter, even if they have no data yet.