Just one question

Just one question

How can I add a graphic about "Threads Availability" to my tomcat monitor, like it�s in the demo:

http://demo.appmanager.com/showresource.do?resourceid=165&type=Tomcat-server&moname=IF-192.168.100.233_Tomcat-server_5000&method=showdetails&resourcename=Store_Tomcat_Server

Thank you! :D