diff --git a/pyaedt/maxwell.py b/pyaedt/maxwell.py
index 99a61115fe3..88553f1486b 100644
--- a/pyaedt/maxwell.py
+++ b/pyaedt/maxwell.py
@@ -1007,7 +1007,12 @@ def assign_voltage(self, assignment, amplitude=1, name=None):
                 else:
                     props = OrderedDict({"Faces": assignment, "Value": amplitude})
             else:
-                props = OrderedDict({"Faces": assignment, "Voltage": amplitude})
+                props = OrderedDict({"Faces": [], "Objects": [], "Voltage": amplitude})
+                for element in assignment:
+                    if isinstance(element, str) and element in self.modeler.object_names:
+                        props["Objects"].append(element)
+                    else:
+                        props["Faces"].append(element)
         bound = BoundaryObject(self, name, props, "Voltage")
         if bound.create():
             self._boundaries[bound.name] = bound