diff --git a/.vscode/PythonImportHelper-v2-Completion.json b/.vscode/PythonImportHelper-v2-Completion.json
index 196882a..65a6811 100644
--- a/.vscode/PythonImportHelper-v2-Completion.json
+++ b/.vscode/PythonImportHelper-v2-Completion.json
@@ -506,11 +506,12 @@
         "documentation": {}
     },
     {
-        "label": "DjangoFilterBackend",
-        "importPath": "django_filters.rest_framework",
-        "description": "django_filters.rest_framework",
+        "label": "django_filters",
+        "kind": 6,
         "isExtraImport": true,
-        "detail": "django_filters.rest_framework",
+        "importPath": "django_filters",
+        "description": "django_filters",
+        "detail": "django_filters",
         "documentation": {}
     },
     {
@@ -1094,7 +1095,25 @@
         "kind": 6,
         "importPath": "back.object.views",
         "description": "back.object.views",
-        "peekOfCode": "class ClickableAreaViewSet(viewsets.ModelViewSet):\n    queryset = ClickableArea.objects.all()\n    serializer_class = ClickableAreaSerializer\nclass Element3DViewSet(viewsets.ModelViewSet):\n    queryset = Element3D.objects.all()\n    serializer_class = Element3DSerializer\n    filterset_fields = ('parent', )\n    filter_backends = [DjangoFilterBackend]",
+        "peekOfCode": "class ClickableAreaViewSet(viewsets.ModelViewSet):\n    queryset = ClickableArea.objects.all()\n    serializer_class = ClickableAreaSerializer\nclass NumberInFilter(django_filters.BaseInFilter, django_filters.NumberFilter):\n    pass\nclass Element3DFilter(django_filters.rest_framework.FilterSet):\n    parent = NumberInFilter(\n        field_name=\"parent\",\n        lookup_expr=\"in\",\n    )",
+        "detail": "back.object.views",
+        "documentation": {}
+    },
+    {
+        "label": "NumberInFilter",
+        "kind": 6,
+        "importPath": "back.object.views",
+        "description": "back.object.views",
+        "peekOfCode": "class NumberInFilter(django_filters.BaseInFilter, django_filters.NumberFilter):\n    pass\nclass Element3DFilter(django_filters.rest_framework.FilterSet):\n    parent = NumberInFilter(\n        field_name=\"parent\",\n        lookup_expr=\"in\",\n    )\n    parent__isnull = django_filters.BooleanFilter(\n        field_name=\"parent\",\n        lookup_expr=\"isnull\",",
+        "detail": "back.object.views",
+        "documentation": {}
+    },
+    {
+        "label": "Element3DFilter",
+        "kind": 6,
+        "importPath": "back.object.views",
+        "description": "back.object.views",
+        "peekOfCode": "class Element3DFilter(django_filters.rest_framework.FilterSet):\n    parent = NumberInFilter(\n        field_name=\"parent\",\n        lookup_expr=\"in\",\n    )\n    parent__isnull = django_filters.BooleanFilter(\n        field_name=\"parent\",\n        lookup_expr=\"isnull\",\n    )\nclass Element3DViewSet(viewsets.ModelViewSet):",
         "detail": "back.object.views",
         "documentation": {}
     },
@@ -1103,7 +1122,7 @@
         "kind": 6,
         "importPath": "back.object.views",
         "description": "back.object.views",
-        "peekOfCode": "class Element3DViewSet(viewsets.ModelViewSet):\n    queryset = Element3D.objects.all()\n    serializer_class = Element3DSerializer\n    filterset_fields = ('parent', )\n    filter_backends = [DjangoFilterBackend]",
+        "peekOfCode": "class Element3DViewSet(viewsets.ModelViewSet):\n    queryset = Element3D.objects.all()\n    serializer_class = Element3DSerializer\n    filterset_class = Element3DFilter",
         "detail": "back.object.views",
         "documentation": {}
     },
diff --git a/back/object/views.py b/back/object/views.py
index d951c6a..59e23a2 100644
--- a/back/object/views.py
+++ b/back/object/views.py
@@ -1,16 +1,31 @@
 from rest_framework import viewsets
-from django_filters.rest_framework import DjangoFilterBackend
+import django_filters
+
 from .models import ClickableArea, Element3D
 from .serializers import ClickableAreaSerializer, Element3DSerializer
 
+
 class ClickableAreaViewSet(viewsets.ModelViewSet):
     queryset = ClickableArea.objects.all()
     serializer_class = ClickableAreaSerializer
-    
-    
+
+
+class NumberInFilter(django_filters.BaseInFilter, django_filters.NumberFilter):
+    pass
+
+
+class Element3DFilter(django_filters.rest_framework.FilterSet):
+    parent = NumberInFilter(
+        field_name="parent",
+        lookup_expr="in",
+    )
+    parent__isnull = django_filters.BooleanFilter(
+        field_name="parent",
+        lookup_expr="isnull",
+    )
+
+
 class Element3DViewSet(viewsets.ModelViewSet):
     queryset = Element3D.objects.all()
     serializer_class = Element3DSerializer
-    
-    filterset_fields = ('parent', )
-    filter_backends = [DjangoFilterBackend]
\ No newline at end of file
+    filterset_class = Element3DFilter