diff --git a/src/ansys/aedt/core/icepak.py b/src/ansys/aedt/core/icepak.py
index 618ffa9ea2c..686dbc92458 100644
--- a/src/ansys/aedt/core/icepak.py
+++ b/src/ansys/aedt/core/icepak.py
@@ -961,7 +961,7 @@ def assign_surface_monitor(self, face_name, monitor_type="Temperature", monitor_
         >>> icepak.assign_surface_monitor("Surface1", monitor_name="monitor")
         'monitor'
         """
-        return self._monitor.assign_surface_monitor(face_name, monitor_quantity=monitor_type, monitor_name=monitor_name)
+        return self.monitor.assign_surface_monitor(face_name, monitor_quantity=monitor_type, monitor_name=monitor_name)
 
     @pyaedt_function_handler()
     def assign_point_monitor(self, point_position, monitor_type="Temperature", monitor_name=None):
@@ -994,7 +994,7 @@ def assign_point_monitor(self, point_position, monitor_type="Temperature", monit
         'monitor1'
 
         """
-        return self._monitor.assign_point_monitor(
+        return self.monitor.assign_point_monitor(
             point_position, monitor_quantity=monitor_type, monitor_name=monitor_name
         )
 
@@ -1031,7 +1031,7 @@ def assign_point_monitor_in_object(self, name, monitor_type="Temperature", monit
         >>> icepak.assign_point_monitor(box.name, monitor_name="monitor2")
         "'monitor2'
         """
-        return self._monitor.assign_point_monitor_in_object(
+        return self.monitor.assign_point_monitor_in_object(
             name, monitor_quantity=monitor_type, monitor_name=monitor_name
         )
 
diff --git a/src/ansys/aedt/core/modeler/cad/elements_3d.py b/src/ansys/aedt/core/modeler/cad/elements_3d.py
index 19735a69aa5..8c3f1e798aa 100644
--- a/src/ansys/aedt/core/modeler/cad/elements_3d.py
+++ b/src/ansys/aedt/core/modeler/cad/elements_3d.py
@@ -1451,10 +1451,7 @@ def properties(self):
 
                 props = _get_data_model(self.child_object)
                 for p in self.child_object.GetPropNames():
-                    if p in props:
-                        self._props[p] = props[p]
-                    else:
-                        self._props[p] = None
+                    self._props[p] = props.get(p, None)
             except Exception:
                 for p in self.child_object.GetPropNames():
                     try:
diff --git a/src/ansys/aedt/core/modules/mesh.py b/src/ansys/aedt/core/modules/mesh.py
index 19c54c21dca..1c0726350a5 100644
--- a/src/ansys/aedt/core/modules/mesh.py
+++ b/src/ansys/aedt/core/modules/mesh.py
@@ -1177,9 +1177,13 @@ def assign_length_mesh(self, assignment, inside_selection=True, maximum_length=1
 
         mop = MeshOperation(self, name, props, "LengthBased")
         for meshop in self.meshoperations[:]:
-            if meshop.name == mop.name:
-                meshop.delete()
-                break
+            try:
+                if meshop.name == mop.name:
+                    meshop.delete()
+                    break
+            # Handle case where mop has no child_object
+            except AttributeError:
+                continue
         mop.create()
         self.meshoperations.append(mop)
         return mop