vcenter polling and stats collecting

vcenter polling and stats collecting

I managed to add my vcenter monitor. I am also using a poller. The vcenter recognizes the hosts, clusters, etc. but does not automatically discover the VMs. I was under the impression that once I entered in the vcenter monitor, it would automatically map out all of my devices and will pull stats directly from vcenter? It also does not show my any stats for the hosts it discovered. All I see is the availability percentage for vcenter. Why isn?t it discovering and polling the individual hosts and VMs?