diff --git a/backend/src/main/java/service/loading/ContainerValueLoaderServiceBase.java b/backend/src/main/java/service/loading/ContainerValueLoaderServiceBase.java
index 536a9fc..54a7e8c 100644
--- a/backend/src/main/java/service/loading/ContainerValueLoaderServiceBase.java
+++ b/backend/src/main/java/service/loading/ContainerValueLoaderServiceBase.java
@@ -38,7 +38,7 @@ public abstract class ContainerValueLoaderServiceBase extends Behavior
       return Collections.emptyList();
     }
     validateParametersNumber(params.length);
-    return new ArrayList<>(loadData(params, idToColumnMapping(guids)));
+    return new ArrayList<>(loadData(params, byColumnMapping(guids)));
   }
 
   protected abstract void validateParametersNumber(int parametersLength);
@@ -47,27 +47,26 @@ public abstract class ContainerValueLoaderServiceBase extends Behavior
 
   protected abstract List<EntityFilter> createEntityFilters(Object[] params);
 
-  private Map<String, EntityColumn> idToColumnMapping(List<String> guids) {
-    Map<String, FieldValueByContainer<?>> byColumnMapping = getScriptsMapping(guids,
+  private Map<String, FieldValueByContainer<?,?>> byColumnMapping(List<String> guids) {
+    Map<String, FieldValueByContainer<?,?>> byColumnMapping = getScriptsMapping(guids,
         fieldDefaultValue -> fieldDefaultValue.loadType == LoadType.BY_COLUMN
     );
     if (byColumnMapping.isEmpty()) {
       throw new IllegalArgumentException("No control data to load");
     }
-    Map<String, EntityColumn> idToColumnMapping = byColumnMapping.entrySet().stream()
-        .collect(Collectors.toMap(
-                Map.Entry::getKey,
-                entry -> entry.getValue().getValueColumn()
-            )
-        );
-    return idToColumnMapping;
+
+    return byColumnMapping;
   }
 
-  private List<FieldData> loadData(Object[] params, Map<String, EntityColumn> idToColumnMapping) {
-    Set<EntityColumn> columns = new HashSet<>(idToColumnMapping.values());
+  private List<FieldData> loadData(Object[] params,  Map<String, FieldValueByContainer<?,?>> byColumnMapping ) {
+    Set<EntityColumn> columns = byColumnMapping.values().stream()
+        .map(FieldValueByContainer::getValueColumn)
+        .collect(Collectors.toSet());
+
     Map<EntityColumn, Object> columnToDataMapping;
     if (loadByPkCondition()) {
-      columnToDataMapping = loadDao.loadByPK(columns, params[0].toString()).getColumnToDataMap();
+      columnToDataMapping = loadDao.loadByPK(columns, params[0].toString())
+          .getColumnToDataMap();
     }
     else {
       LoadOptions loadOptions = new LoadOptions();
@@ -78,19 +77,18 @@ public abstract class ContainerValueLoaderServiceBase extends Behavior
                             : Collections.emptyMap();
     }
 
-    return idToColumnMapping.entrySet().stream()
+    return byColumnMapping.entrySet().stream()
         .map(entry -> {
-          DataConverter dataConverter = DataConverterProvider.getDataConverter(
-              entry.getValue().getType());
-          Object convertedValue = dataConverter.convertValueForLoad(
-              columnToDataMapping.get(entry.getValue()));
+          FieldValueByContainer<Object, Object> fieldValue = (FieldValueByContainer<Object, Object>) entry.getValue();
+          Object rawValue = columnToDataMapping.get(fieldValue.getValueColumn());
+          Object convertedValue = fieldValue.convertValueForLoad(rawValue);
           return new FieldData(entry.getKey(), convertedValue);
         })
         .collect(Collectors.toList());
   }
 
-  private Map<String, FieldValueByContainer<?>> getScriptsMapping(List<String> guids,
-      final Predicate<FieldValueByContainer<?>> predicate) {
+  private Map<String, FieldValueByContainer<?,?>> getScriptsMapping(List<String> guids,
+      final Predicate<FieldValueByContainer<?,?>> predicate) {
     return guids.stream()
         .map(guid -> new HashMap.SimpleEntry<>(guid, getFieldOnEventValueScript(guid)))
         .filter(entry -> entry.getValue() != null)
@@ -98,7 +96,7 @@ public abstract class ContainerValueLoaderServiceBase extends Behavior
         .collect(Collectors.toMap(HashMap.SimpleEntry::getKey, HashMap.SimpleEntry::getValue));
   }
 
-  private FieldValueByContainer<?> getFieldOnEventValueScript(String guid) {
+  private FieldValueByContainer<?,?> getFieldOnEventValueScript(String guid) {
     try {
       return getScriptInObject(guid, FieldValueByContainer.class);
     }