Muliple values needed

1. select v_FullCollectionMembership.CollectionID As 'Collection ID', v_Collection.Name As 'Collection Name', v_R_System.Name0 As 'Machine Name' from v_FullCollectionMembership

JOIN v_R_System on v_FullCollectionMembership.ResourceID = v_R_System.ResourceID

JOIN v_Collection on v_FullCollectionMembership.CollectionID = v_Collection.CollectionID

Where v_R_System.Name0 in (@Comp )

2. On Propreties of the parameter check (Allow multiple values)