HeartBeat Discovery Status of specific collection of systems

select
    CS.Name0,
    max(AD.AgentTime) as 'Date/Time'
from
    dbo.v_AgentDiscoveries ad
    JOIN dbo.v_GS_COMPUTER_SYSTEM cs on AD.ResourceID = CS.ResourceId
    join dbo.v_FullCollectionMembership FCM on FCM.ResourceID = CS.ResourceId
Where
    AgentName = 'Heartbeat Discovery'
    and FCM.CollectionID = 'SMS00001'
Group by
    CS.Name0