diff --git a/modules/i3plus-ext-mes-pcn-pojo/src/main/java/cn/estsh/i3plus/ext/mes/pcn/pojo/context/MesProductionProcessContext.java b/modules/i3plus-ext-mes-pcn-pojo/src/main/java/cn/estsh/i3plus/ext/mes/pcn/pojo/context/MesProductionProcessContext.java
index f190c58..c8ba4bb 100644
--- a/modules/i3plus-ext-mes-pcn-pojo/src/main/java/cn/estsh/i3plus/ext/mes/pcn/pojo/context/MesProductionProcessContext.java
+++ b/modules/i3plus-ext-mes-pcn-pojo/src/main/java/cn/estsh/i3plus/ext/mes/pcn/pojo/context/MesProductionProcessContext.java
@@ -258,6 +258,9 @@ public class MesProductionProcessContext implements Serializable {
     public MesProductionProcessContext equipVariableCfgJson(List<MesEquipmentVariableCfg> equipmentVariableCfgList) {
         if (CollectionUtils.isEmpty(equipmentVariableCfgList)) return this;
         if (!StringUtils.isEmpty(this.equipVariableCfgJson)) equipmentVariableCfgList.addAll(getEquipVariableCfgList());
+        equipmentVariableCfgList.stream().filter(o -> null != o).forEach(o -> {
+            if (StringUtils.isEmpty(o.getModifyDatetime())) o.setModifyDatetime(o.getCreateDatetime());
+        });
         equipmentVariableCfgList = equipmentVariableCfgList.stream().filter(o -> null != o).sorted(Comparator.comparing(MesEquipmentVariableCfg::getModifyDatetime).reversed()).collect(Collectors.toList());
         equipmentVariableCfgList = equipmentVariableCfgList.stream().filter(o -> null != o).distinct().collect(Collectors.collectingAndThen(Collectors.toCollection(() -> new TreeSet<>(Comparator.comparing(MesEquipmentVariableCfg::getId))), ArrayList::new));
         this.equipVariableCfgJson = JSONObject.toJSONString(equipmentVariableCfgList);
@@ -289,6 +292,9 @@ public class MesProductionProcessContext implements Serializable {
         equipmentVariableList = CollectionUtils.isEmpty(equipmentVariableList) ? null : equipmentVariableList.stream().filter(o -> (null != o && !StringUtils.isEmpty(o.getCategoryLevelTwo()))).collect(Collectors.toList());
         if (CollectionUtils.isEmpty(equipmentVariableList)) return this;
         if (!StringUtils.isEmpty(this.equipVariableJson)) equipmentVariableList.addAll(getEquipVariableList());
+        equipmentVariableList.stream().filter(o -> null != o).forEach(o -> {
+            if (StringUtils.isEmpty(o.getModifyDatetime())) o.setModifyDatetime(o.getCreateDatetime());
+        });
         equipmentVariableList = equipmentVariableList.stream().filter(o -> null != o).sorted(Comparator.comparing(MesEquipmentVariable::getModifyDatetime).reversed()).collect(Collectors.toList());
         equipmentVariableList = equipmentVariableList.stream().filter(o -> null != o).distinct().collect(Collectors.collectingAndThen(Collectors.toCollection(() -> new TreeSet<>(Comparator.comparing(MesEquipmentVariable::getId))), ArrayList::new));
         this.equipVariableJson = JSONObject.toJSONString(equipmentVariableList);