diff --git a/src/ansys/fluent/core/services/datamodel_se.py b/src/ansys/fluent/core/services/datamodel_se.py
index 4003c89fb46..60177cb7e78 100644
--- a/src/ansys/fluent/core/services/datamodel_se.py
+++ b/src/ansys/fluent/core/services/datamodel_se.py
@@ -1738,7 +1738,9 @@ def _get_file_purpose(self, arg):
     def before_execute(self, value):
         """Executes before command execution."""
         if hasattr(self, "_do_before_execute"):
-            self._do_before_execute(value)
+            return self._do_before_execute(value)
+        else:
+            return value
 
     def after_execute(self, value):
         """Executes after command execution."""
@@ -1755,8 +1757,7 @@ def __call__(self, *args, **kwds) -> Any:
         """
         for arg, value in kwds.items():
             if self._get_file_purpose(arg):
-                self.before_execute(value)
-                kwds[f"{arg}"] = os.path.basename(value)
+                kwds[arg] = self.before_execute(value)
         command = self.service.execute_command(
             self.rules, convert_path_to_se_path(self.path), self.command, kwds
         )
@@ -1824,15 +1825,22 @@ def create_instance(self) -> "PyCommandArguments":
 class _InputFile:
     def _do_before_execute(self, value):
         try:
-            self.service.file_transfer_service.upload(file_name=value)
+            file_names = value if isinstance(value, list) else [value]
+            base_names = []
+            for file_name in file_names:
+                self.service.file_transfer_service.upload(file_name=file_name)
+                base_names.append(os.path.basename(file_name))
+            return base_names if isinstance(value, list) else base_names[0]
         except AttributeError:
-            pass
+            return value
 
 
 class _OutputFile:
     def _do_after_execute(self, value):
         try:
-            self.service.file_transfer_service.download(file_name=value)
+            file_names = value if isinstance(value, list) else [value]
+            for file_name in file_names:
+                self.service.file_transfer_service.download(file_name=file_name)
         except AttributeError:
             pass
 
diff --git a/tests/test_file_transfer_service.py b/tests/test_file_transfer_service.py
index c8f90f317d7..7eff9ac8ad1 100644
--- a/tests/test_file_transfer_service.py
+++ b/tests/test_file_transfer_service.py
@@ -106,3 +106,24 @@ def test_datamodel_execute():
 
     with pytest.raises(RuntimeError):
         import_geom.Execute()
+
+
+def test_file_list_in_datamodel(fault_tolerant_workflow_session):
+    meshing = fault_tolerant_workflow_session
+    fmd_file = examples.download_file("exhaust_system.fmd", "pyfluent/exhaust_system")
+    meshing.PartManagement.AppendFmdFiles(
+        AssemblyParentNode=0,
+        FilePath=[fmd_file],
+        FileUnit="mm",
+        IgnoreSolidNamesAppend=False,
+        JtLOD="1",
+        Options={
+            "Line": False,
+            "Solid": True,
+            "Surface": True,
+        },
+        PartPerBody=False,
+        PrefixParentName=False,
+        RemoveEmptyParts=True,
+        Route="Native",
+    )