diff --git a/generated/vpperformancemonitoringhistorydata.go b/generated/vpperformancemonitoringhistorydata.go
index aaf21f0..4f09012 100644
--- a/generated/vpperformancemonitoringhistorydata.go
+++ b/generated/vpperformancemonitoringhistorydata.go
@@ -1,13 +1,13 @@
 /*
  * Copyright (c) 2018 - present.  Boling Consulting Solutions (bcsw.net)
  * Copyright 2020-present Open Networking Foundation
-
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
-
+ *
  * http://www.apache.org/licenses/LICENSE-2.0
-
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -58,7 +58,7 @@
 //			It records only loss of information, independent of the priority of the cell. (R) (mandatory)
 //			(2-bytes)
 //
-//		Lost C_= 0 Cells
+//		Lost C0 Cells
 //			Lost C-= 0 cells: This attribute counts loss of high priority cells. It cannot distinguish
 //			between cells lost because of header bit errors, ATM-level header errors, cell policing, or
 //			buffer overflows. It records only loss of high priority cells. (R) (mandatory) (2-bytes)
@@ -66,11 +66,11 @@
 //		Misinserted Cells
 //			This attribute counts cells that are misrouted to a monitored VP. (R) (mandatory) (2-bytes)
 //
-//		Transmitted C_= 0 _ 1 Cells
+//		Transmitted C0 _ 1 Cells
 //			Transmitted C-= 0-+ 1 cells: This attribute counts cells originated by the transmitting end
 //			point (i.e., backward reporting is assumed). (R) (mandatory) (5-bytes)
 //
-//		Transmitted C_= 0 Cells
+//		Transmitted C0 Cells
 //			Transmitted C-= 0 cells: This attribute counts high priority cells originated by the
 //			transmitting end point (i.e., backward reporting is assumed). (R) (mandatory) (5-bytes)
 //
@@ -85,10 +85,21 @@
 	Attributes AttributeValueMap
 }
 
+// Attribute name constants
+
+const VpPerformanceMonitoringHistoryData_IntervalEndTime = "IntervalEndTime"
+const VpPerformanceMonitoringHistoryData_ThresholdData12Id = "ThresholdData12Id"
+const VpPerformanceMonitoringHistoryData_LostC01Cells = "LostC01Cells"
+const VpPerformanceMonitoringHistoryData_LostC0Cells = "LostC0Cells"
+const VpPerformanceMonitoringHistoryData_MisinsertedCells = "MisinsertedCells"
+const VpPerformanceMonitoringHistoryData_TransmittedC01Cells = "TransmittedC01Cells"
+const VpPerformanceMonitoringHistoryData_TransmittedC0Cells = "TransmittedC0Cells"
+const VpPerformanceMonitoringHistoryData_ImpairedBlock = "ImpairedBlock"
+
 func init() {
 	vpperformancemonitoringhistorydataBME = &ManagedEntityDefinition{
 		Name:    "VpPerformanceMonitoringHistoryData",
-		ClassID: 62,
+		ClassID: VpPerformanceMonitoringHistoryDataClassID,
 		MessageTypes: mapset.NewSetWith(
 			Create,
 			Delete,
@@ -98,15 +109,15 @@
 		),
 		AllowedAttributeMask: 0xff00,
 		AttributeDefinitions: AttributeDefinitionMap{
-			0: Uint16Field("ManagedEntityId", PointerAttributeType, 0x0000, 0, mapset.NewSetWith(Read, SetByCreate), false, false, false, 0),
-			1: ByteField("IntervalEndTime", UnsignedIntegerAttributeType, 0x8000, 0, mapset.NewSetWith(Read), false, false, false, 1),
-			2: Uint16Field("ThresholdData12Id", UnsignedIntegerAttributeType, 0x4000, 0, mapset.NewSetWith(Read, SetByCreate, Write), false, false, false, 2),
-			3: Uint16Field("LostC01Cells", CounterAttributeType, 0x2000, 0, mapset.NewSetWith(Read), false, false, false, 3),
-			4: Uint16Field("LostC=0Cells", CounterAttributeType, 0x1000, 0, mapset.NewSetWith(Read), false, false, false, 4),
-			5: Uint16Field("MisinsertedCells", CounterAttributeType, 0x0800, 0, mapset.NewSetWith(Read), false, false, false, 5),
-			6: MultiByteField("TransmittedC=01Cells", CounterAttributeType, 0x0400, 5, toOctets("AAAAAAA="), mapset.NewSetWith(Read), false, false, false, 6),
-			7: MultiByteField("TransmittedC=0Cells", CounterAttributeType, 0x0200, 5, toOctets("AAAAAAA="), mapset.NewSetWith(Read), false, false, false, 7),
-			8: Uint16Field("ImpairedBlock", CounterAttributeType, 0x0100, 0, mapset.NewSetWith(Read), false, false, false, 8),
+			0: Uint16Field(ManagedEntityID, PointerAttributeType, 0x0000, 0, mapset.NewSetWith(Read, SetByCreate), false, false, false, 0),
+			1: ByteField(VpPerformanceMonitoringHistoryData_IntervalEndTime, UnsignedIntegerAttributeType, 0x8000, 0, mapset.NewSetWith(Read), false, false, false, 1),
+			2: Uint16Field(VpPerformanceMonitoringHistoryData_ThresholdData12Id, UnsignedIntegerAttributeType, 0x4000, 0, mapset.NewSetWith(Read, SetByCreate, Write), false, false, false, 2),
+			3: Uint16Field(VpPerformanceMonitoringHistoryData_LostC01Cells, CounterAttributeType, 0x2000, 0, mapset.NewSetWith(Read), false, false, false, 3),
+			4: Uint16Field(VpPerformanceMonitoringHistoryData_LostC0Cells, CounterAttributeType, 0x1000, 0, mapset.NewSetWith(Read), false, false, false, 4),
+			5: Uint16Field(VpPerformanceMonitoringHistoryData_MisinsertedCells, CounterAttributeType, 0x0800, 0, mapset.NewSetWith(Read), false, false, false, 5),
+			6: MultiByteField(VpPerformanceMonitoringHistoryData_TransmittedC01Cells, CounterAttributeType, 0x0400, 5, toOctets("AAAAAAA="), mapset.NewSetWith(Read), false, false, false, 6),
+			7: MultiByteField(VpPerformanceMonitoringHistoryData_TransmittedC0Cells, CounterAttributeType, 0x0200, 5, toOctets("AAAAAAA="), mapset.NewSetWith(Read), false, false, false, 7),
+			8: Uint16Field(VpPerformanceMonitoringHistoryData_ImpairedBlock, CounterAttributeType, 0x0100, 0, mapset.NewSetWith(Read), false, false, false, 8),
 		},
 		Access:  CreatedByOlt,
 		Support: UnknownSupport,