diff --git a/go/common/common.pb.go b/go/common/common.pb.go
index c4b9028..3975047 100644
--- a/go/common/common.pb.go
+++ b/go/common/common.pb.go
@@ -191,6 +191,31 @@
 	return fileDescriptor_c2e3fd231961e826, []int{5, 0}
 }
 
+type ValueType_Type int32
+
+const (
+	ValueType_EMPTY    ValueType_Type = 0
+	ValueType_DISTANCE ValueType_Type = 1
+)
+
+var ValueType_Type_name = map[int32]string{
+	0: "EMPTY",
+	1: "DISTANCE",
+}
+
+var ValueType_Type_value = map[string]int32{
+	"EMPTY":    0,
+	"DISTANCE": 1,
+}
+
+func (x ValueType_Type) String() string {
+	return proto.EnumName(ValueType_Type_name, int32(x))
+}
+
+func (ValueType_Type) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_c2e3fd231961e826, []int{6, 0}
+}
+
 // Convey a resource identifier
 type ID struct {
 	Id                   string   `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
@@ -413,52 +438,205 @@
 	return ""
 }
 
+type ValueType struct {
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ValueType) Reset()         { *m = ValueType{} }
+func (m *ValueType) String() string { return proto.CompactTextString(m) }
+func (*ValueType) ProtoMessage()    {}
+func (*ValueType) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c2e3fd231961e826, []int{6}
+}
+
+func (m *ValueType) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ValueType.Unmarshal(m, b)
+}
+func (m *ValueType) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ValueType.Marshal(b, m, deterministic)
+}
+func (m *ValueType) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ValueType.Merge(m, src)
+}
+func (m *ValueType) XXX_Size() int {
+	return xxx_messageInfo_ValueType.Size(m)
+}
+func (m *ValueType) XXX_DiscardUnknown() {
+	xxx_messageInfo_ValueType.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ValueType proto.InternalMessageInfo
+
+type ValueSpecifier struct {
+	Id                   string         `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Value                ValueType_Type `protobuf:"varint,2,opt,name=value,proto3,enum=common.ValueType_Type" json:"value,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}       `json:"-"`
+	XXX_unrecognized     []byte         `json:"-"`
+	XXX_sizecache        int32          `json:"-"`
+}
+
+func (m *ValueSpecifier) Reset()         { *m = ValueSpecifier{} }
+func (m *ValueSpecifier) String() string { return proto.CompactTextString(m) }
+func (*ValueSpecifier) ProtoMessage()    {}
+func (*ValueSpecifier) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c2e3fd231961e826, []int{7}
+}
+
+func (m *ValueSpecifier) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ValueSpecifier.Unmarshal(m, b)
+}
+func (m *ValueSpecifier) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ValueSpecifier.Marshal(b, m, deterministic)
+}
+func (m *ValueSpecifier) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ValueSpecifier.Merge(m, src)
+}
+func (m *ValueSpecifier) XXX_Size() int {
+	return xxx_messageInfo_ValueSpecifier.Size(m)
+}
+func (m *ValueSpecifier) XXX_DiscardUnknown() {
+	xxx_messageInfo_ValueSpecifier.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ValueSpecifier proto.InternalMessageInfo
+
+func (m *ValueSpecifier) GetId() string {
+	if m != nil {
+		return m.Id
+	}
+	return ""
+}
+
+func (m *ValueSpecifier) GetValue() ValueType_Type {
+	if m != nil {
+		return m.Value
+	}
+	return ValueType_EMPTY
+}
+
+type ReturnValues struct {
+	Set                  uint32   `protobuf:"varint,1,opt,name=Set,proto3" json:"Set,omitempty"`
+	Unsupported          uint32   `protobuf:"varint,2,opt,name=Unsupported,proto3" json:"Unsupported,omitempty"`
+	Error                uint32   `protobuf:"varint,3,opt,name=Error,proto3" json:"Error,omitempty"`
+	Distance             uint32   `protobuf:"varint,4,opt,name=Distance,proto3" json:"Distance,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ReturnValues) Reset()         { *m = ReturnValues{} }
+func (m *ReturnValues) String() string { return proto.CompactTextString(m) }
+func (*ReturnValues) ProtoMessage()    {}
+func (*ReturnValues) Descriptor() ([]byte, []int) {
+	return fileDescriptor_c2e3fd231961e826, []int{8}
+}
+
+func (m *ReturnValues) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ReturnValues.Unmarshal(m, b)
+}
+func (m *ReturnValues) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ReturnValues.Marshal(b, m, deterministic)
+}
+func (m *ReturnValues) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ReturnValues.Merge(m, src)
+}
+func (m *ReturnValues) XXX_Size() int {
+	return xxx_messageInfo_ReturnValues.Size(m)
+}
+func (m *ReturnValues) XXX_DiscardUnknown() {
+	xxx_messageInfo_ReturnValues.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ReturnValues proto.InternalMessageInfo
+
+func (m *ReturnValues) GetSet() uint32 {
+	if m != nil {
+		return m.Set
+	}
+	return 0
+}
+
+func (m *ReturnValues) GetUnsupported() uint32 {
+	if m != nil {
+		return m.Unsupported
+	}
+	return 0
+}
+
+func (m *ReturnValues) GetError() uint32 {
+	if m != nil {
+		return m.Error
+	}
+	return 0
+}
+
+func (m *ReturnValues) GetDistance() uint32 {
+	if m != nil {
+		return m.Distance
+	}
+	return 0
+}
+
 func init() {
 	proto.RegisterEnum("common.TestModeKeys", TestModeKeys_name, TestModeKeys_value)
 	proto.RegisterEnum("common.AdminState_Types", AdminState_Types_name, AdminState_Types_value)
 	proto.RegisterEnum("common.OperStatus_Types", OperStatus_Types_name, OperStatus_Types_value)
 	proto.RegisterEnum("common.ConnectStatus_Types", ConnectStatus_Types_name, ConnectStatus_Types_value)
 	proto.RegisterEnum("common.OperationResp_OperationReturnCode", OperationResp_OperationReturnCode_name, OperationResp_OperationReturnCode_value)
+	proto.RegisterEnum("common.ValueType_Type", ValueType_Type_name, ValueType_Type_value)
 	proto.RegisterType((*ID)(nil), "common.ID")
 	proto.RegisterType((*IDs)(nil), "common.IDs")
 	proto.RegisterType((*AdminState)(nil), "common.AdminState")
 	proto.RegisterType((*OperStatus)(nil), "common.OperStatus")
 	proto.RegisterType((*ConnectStatus)(nil), "common.ConnectStatus")
 	proto.RegisterType((*OperationResp)(nil), "common.OperationResp")
+	proto.RegisterType((*ValueType)(nil), "common.ValueType")
+	proto.RegisterType((*ValueSpecifier)(nil), "common.ValueSpecifier")
+	proto.RegisterType((*ReturnValues)(nil), "common.ReturnValues")
 }
 
 func init() { proto.RegisterFile("voltha_protos/common.proto", fileDescriptor_c2e3fd231961e826) }
 
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 }