diff --git a/config.json b/config.json
index f119fea..c54cf88 100644
--- a/config.json
+++ b/config.json
@@ -1,13 +1,13 @@
 {
   "actions": [
     {
-      "name": "Table Summary Generator OpenAI",
+      "name": "Table Summary Generator with OpenAI",
       "desc": "A Docker image that automatically generates and applies table summary to PDF files using PDFix SDK and OpenAI",
       "version": {
         "major": 1,
         "minor": 0
       },
-      "icon": "add_table_summary",
+      "icon": "table_view",
       "category": "Tags",
       "configurations": [
         {
diff --git a/src/ai.py b/src/ai.py
index 21fc28b..2c77a53 100644
--- a/src/ai.py
+++ b/src/ai.py
@@ -26,7 +26,7 @@ def table_summary(img_path: str, api_key: str, lang: str):
                 "content": [
                     {
                         "type": "text",
-                        "text": f"Generate summary for the table in {lang} language. Do not output any other text except for generated summaty. If you can't generate any result return just empty string.",
+                        "text": f"Generate summary for the table in {lang} language. Do not output any other text except for generated summaty. If you can't generate any result return just empty string. Use plain text, no markdown format.",
                     },
                     {
                         "type": "image_url",
diff --git a/src/process_pdf.py b/src/process_pdf.py
index bbb7616..a03e4c2 100644
--- a/src/process_pdf.py
+++ b/src/process_pdf.py
@@ -89,12 +89,31 @@ def update_table_sum(
     response = table_summary(img, api_key, lang)
 
     # print(response.message.content)
-    alt = response.message.content
+    summary = response.message.content
 
-    org_alt = elem.GetAlt()
+    if not summary or summary == "":
+        print("[" + img + "] no summary generated")
+        return
+
+    attr_set = False
+    attr_dict = None
+    for index in reversed(range(elem.GetNumAttrObjects())):
+        attr_obj = elem.GetAttrObject(index)
+        if not attr_obj:
+            continue
+        attr_item = PdsDictionary(attr_obj.obj)
+        if attr_item.GetText("O") == "Table":
+            attr_dict = attr_item
+            break
+
+    if not attr_dict:
+        attr_dict = doc.CreateDictObject(False)
+
+    old_summary = attr_dict.GetText("Summary")
+    if overwrite or not old_summary:
+        print("[" + img + "] summary attribute updated")
+        attr_dict.PutString("Summary", summary)
 
-    if overwrite or not org_alt:
-        elem.SetAlt(alt)
 
 
 def browse_table_tags(