How to create a graph from a personnal extension

Hello once again ;)

  I'm making a custom script on my hobbit server. It will measure the time-response of an application. The
script will return a RED or YELLOW status in the request time in under a define trigger.  But is there a way
to graph that on Hobbit like it's done for "CONN" or so ?

  Thanks by advance for any information or links for a tut!

    CU