Unit Monitor using event ID for ADFS 2.0

Hi,

I'm creating a unit monitor in SCOM to alert if a specific event ID is logged in the AD FS 2.0\Admin event log. However, when I create the unit monitor in SCOM and specify the event log to look in, there is no option to select AD FS 2.0\Admin as a log so I manually entered these details as the log name. However even though I'm getting these specific events in the log on the server this montior doesn't alert me.

Anybody know if I can just type AD FS 2.0/Admin as a log name or can you only select from the available event logs? There must be a way of getting scom to look at other non default event logs and to alert if a specific event ID exists?