Right there’s the problem…
You need to use
X would equal the category ID of your featured category.
The current version of cMap is 4.0, released last week. You can download the latest version from you purchase history.
One of the major new features is in cMap is in admin updates which is enabled by Connections 0.8.x. After you install the update enter your license key on the Connections : Settings admin page under the Licenses tab. After you do that, anytime I release an update you can click to update link right within the admin like you can with plugins from wordpress.org. In order to be notified of updates, you must enter your license key.