diff --git a/examples.ipynb b/examples.ipynb
index 088e033..8323ac2 100644
--- a/examples.ipynb
+++ b/examples.ipynb
@@ -2,20 +2,20 @@
  "cells": [
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [
     {
      "name": "stderr",
      "output_type": "stream",
      "text": [
-      "2024-06-14 11:18:20,153 - geosyspy.utils.oauth2_client - INFO - Authenticated\n"
+      "2024-07-31 08:29:17,754 - geosyspy.utils.oauth2_client - INFO - Authenticated\n"
      ]
     }
    ],
    "source": [
-    "from geosyspy import Geosys\n",
     "import os\n",
+    "from geosyspy import Geosys\n",
     "from dotenv import load_dotenv\n",
     "import datetime as dt\n",
     "from dateutil.relativedelta import relativedelta\n",
@@ -5516,6 +5516,31 @@
     "df_new = pd.DataFrame.from_records([data_dict])\n",
     "df_new\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "download ok\n"
+     ]
+    }
+   ],
+   "source": [
+    "# display difference map\n",
+    "season_field_id = \"bgbrzez\"\n",
+    "image_early = \"sentinel-2-l2a%7CS2B_13SGC_20230520_0_L2A\"\n",
+    "image_late = \"sentinel-2-l2a%7CS2B_13SGC_20230530_0_L2A\"\n",
+    "image_diff = client.download_image_difference_map(season_field_id=season_field_id,image_id_earliest=image_early,image_id_latest=image_late)\n",
+    "if image_diff is not None:\n",
+    "    print(\"download ok\")\n",
+    "else:\n",
+    "    print(\"download nok\")"
+   ]
   }
  ],
  "metadata": {
@@ -5534,7 +5559,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.11.9"
+   "version": "3.12.4"
   }
  },
  "nbformat": 4,
diff --git a/geosyspy/services/map_product_service.py b/geosyspy/services/map_product_service.py
index c03625c..890264c 100644
--- a/geosyspy/services/map_product_service.py
+++ b/geosyspy/services/map_product_service.py
@@ -212,7 +212,6 @@ def get_zipped_tiff_difference_map(
             GeosysApiEndpoints.FLM_BASE_REFERENCE_MAP.value.format(field_id)
             + parameters,
         )
-
         response_zipped_tiff = self.http_client.get(
             download_tiff_url,
             {"X-Geosys-Task-Code": PRIORITY_HEADERS[self.priority_queue]},