diff --git a/geos-trame/src/geos/trame/app/ui/viewer/viewer.py b/geos-trame/src/geos/trame/app/ui/viewer/viewer.py
index 252e793e2..9a4c68564 100644
--- a/geos-trame/src/geos/trame/app/ui/viewer/viewer.py
+++ b/geos-trame/src/geos/trame/app/ui/viewer/viewer.py
@@ -62,7 +62,7 @@ def __init__(
         self.SELECTED_DATA_ARRAY = "viewer_selected_data_array"
         self.state.change( self.SELECTED_DATA_ARRAY )( self._update_actor_array )
 
-        self.box_engine: BoxViewer | None = None
+        self.box_engine: dict[ str, BoxViewer ] = {}
         self.region_engine = region_viewer
         self.well_engine = well_viewer
         self._perforations: dict[ str, PerforationViewer ] = {}
@@ -354,23 +354,24 @@ def _update_box( self, active_block: Box, show_obj: bool ) -> None:
             )
             return
 
-        if self.box_engine is not None:
-            box_polydata_actor: pv.Actor = self.box_engine.get_box_polydata_actor()
-            extracted_cell_actor: pv.Actor = self.box_engine.get_extracted_cells_actor()
+        if self.box_engine is not None and active_block.name in self.box_engine:
+            box_polydata_actor: pv.Actor = self.box_engine[ active_block.name ].get_box_polydata_actor()
+            extracted_cell_actor: pv.Actor = self.box_engine[ active_block.name ].get_extracted_cells_actor()
             self.plotter.remove_actor( box_polydata_actor )
             self.plotter.remove_actor( extracted_cell_actor )
+            del self.box_engine[ active_block.name ]
 
         if not show_obj:
             return
 
         box: Box = active_block
-        self.box_engine = BoxViewer( self.region_engine.input, box )
+        self.box_engine[ active_block.name ] = BoxViewer( self.region_engine.input, box )
 
-        box_polydata: pv.PolyData = self.box_engine.get_box_polydata()
-        extracted_cell: pv.UnstructuredGrid = self.box_engine.get_extracted_cells()
+        box_polydata: pv.PolyData = self.box_engine[ active_block.name ].get_box_polydata()
+        extracted_cell: pv.UnstructuredGrid = self.box_engine[ active_block.name ].get_extracted_cells()
 
         if box_polydata is not None and extracted_cell is not None:
             _box_polydata_actor = self.plotter.add_mesh( box_polydata, opacity=0.2 )
             _extracted_cells_actor = self.plotter.add_mesh( extracted_cell, show_edges=True )
-            self.box_engine.set_box_polydata_actor( _box_polydata_actor )
-            self.box_engine.set_extracted_cells_actor( _extracted_cells_actor )
+            self.box_engine[ active_block.name ].set_box_polydata_actor( _box_polydata_actor )
+            self.box_engine[ active_block.name ].set_extracted_cells_actor( _extracted_cells_actor )
diff --git a/geos-trame/tests/test_box_intersection.py b/geos-trame/tests/test_box_intersection.py
index 06db5df41..72efb76fb 100644
--- a/geos-trame/tests/test_box_intersection.py
+++ b/geos-trame/tests/test_box_intersection.py
@@ -26,8 +26,8 @@ def test_box_intersection( trame_server_layout: tuple[ Server, VAppLayout ] ) ->
     app.deckInspector.state.object_state = [ "Problem/Geometry/0/Box/0", True ]
     app.deckInspector.state.flush()
 
-    box = app.deckViewer.box_engine._box
-    cells = app.deckViewer.box_engine._extracted_cells
+    box = app.deckViewer.box_engine[ "box_1" ]._box
+    cells = app.deckViewer.box_engine[ "box_1" ]._extracted_cells
 
     assert box is not None
     assert box.x_min == '{ 3509, 4117, -596 }'