This read-create string object specifies the single VLAN member, in X-Y / X-* / *-Y / X1:X2 form, to be added to or removed from this OAMFlowPoint's membership, working alongside cmOAMFlowPointVlanMemberAction which indicates the add or remove direction. An administrator uses this pair of objects to make incremental changes to an OAM flow point's VLAN membership without rewriting the whole membership list. For example, adding a newly provisioned service VLAN to OAM monitoring coverage means setting this object to that VLAN's entry and then triggering the add action.