diff --git a/app/working_database.py b/app/working_database.py
index b6e4ab0..c4c0de8 100644
--- a/app/working_database.py
+++ b/app/working_database.py
@@ -62,13 +62,22 @@ class SimpleDB:
         try:
             with self.pool.acquire() as connection: 
                 with connection.cursor() as cursor:
+                    # Узнать сигнатуру процедуры
+                    cursor.execute("""
+                        SELECT argument_name, data_type, in_out
+                        FROM all_arguments 
+                        WHERE object_name = 'P_RK_SEND_JSON_LIST_FACEACC'
+                        ORDER BY position
+                    """)
+                    for arg in cursor:
+                        print(f"Name: {arg[0]}, Type: {arg[1]}, Direction: {arg[2]}")
                     for id, value in dict_data.items():
                         if len(value) != 5:
                             continue    
                         organ, names, date_from_str, date_to_str, ver = value
                         # Парсим даты
                         date_from = parser.parse(date_from_str).date()
-                        date_to = parser.parse(date_to_str).date() if date_to_str else ""
+                        date_to = parser.parse(date_to_str).date() if date_to_str else None
                         print("Вывод отправляемых агрументов: ", int(id), organ, names, date_from, date_to, ver)
                         print(type(int(id)), type(organ), type(names), type(date_from), type(date_to), type(ver))
                         respons = cursor.callproc('P_RK_SEND_JSON_LIST_FACEACC', [int(id), organ, names, date_from, date_to, ver])