diff --git a/src/metar_navigate/ui/ui.py b/src/metar_navigate/ui/ui.py
index 6947a27..3ad84d2 100644
--- a/src/metar_navigate/ui/ui.py
+++ b/src/metar_navigate/ui/ui.py
@@ -102,43 +102,44 @@ class RichInterface(UIInterface):
             if pressure_unit == '':
                 pressure_unit = 'K'
 
-        self.__parent.config.config_data["checkwx_api_key"] = api_key
+        self.__parent.config.set_data_dict({ "checkwx_api_key": api_key})
 
         if always_show_detailed == 'Y':
-            self.__parent.config.config_data["always_show_detailed"] = True
+            self.__parent.config.set_data_dict({"always_show_detailed":True})
         else:
-            self.__parent.config.config_data["always_show_detailed"] = False
+            self.__parent.config.set_data_dict({"always_show_detailed": False})
 
         if wind_speed_unit == 'K':
-            self.__parent.config.config_data["wind_speed_unit"] = "Keep"
+            self.__parent.config.set_data_dict({"wind_speed_unit":"Keep"})
         elif wind_speed_unit == 'M':
-            self.__parent.config.config_data["wind_speed_unit"] = "Miles"
+            self.__parent.config.set_data_dict({"wind_speed_unit":"Miles"})
         elif wind_speed_unit == 'N':
-            self.__parent.config.config_data["wind_speed_unit"] = "Knots"
+            self.__parent.config.set_data_dict({"wind_speed_unit": "Knots"})
         elif wind_speed_unit == 'H':
-            self.__parent.config.config_data["wind_speed_unit"] = "KM/H"
+            self.__parent.config.set_data_dict({"wind_speed_unit": "KM/H"})
 
         if temp_unit == 'K':
-            self.__parent.config.config_data["temp_unit"] = "Keep"
+            self.__parent.config.set_data_dict({"temp_unit":"Keep"})
         elif temp_unit == 'C':
-            self.__parent.config.config_data["temp_unit"] = "Celsius"
+            self.__parent.config.set_data_dict({ "temp_unit": "Celsius"})
         elif temp_unit == 'F':
-            self.__parent.config.config_data["temp_unit"] = "Fahrenheit"
+            self.__parent.config.set_data_dict({ "temp_unit": "Fahrenheit"})
 
         if visibility_unit == 'K':
-            self.__parent.config.config_data["visibility_unit"] = "Keep"
+            self.__parent.config.set_data_dict({ "visibility_unit": "Keep"})
         elif visibility_unit == 'S':
-            self.__parent.config.config_data["visibility_unit"] = "SM"
+            self.__parent.config.set_data_dict({"visibility_unit": "SM"})
         elif visibility_unit == 'M':
-            self.__parent.config.config_data["visibility_unit"] = "Meters"
+            self.__parent.config.set_data_dict({"visibility_unit": "Miles"})
 
         if pressure_unit == 'K':
-            self.__parent.config.config_data["pressure_unit"] = "Keep"
+            self.__parent.config.set_data_dict({"pressure_unit": "Keep"})
         elif pressure_unit == 'H':
-            self.__parent.config.config_data["pressure_unit"] = "HPa"
+            self.__parent.config.set_data_dict({ "pressure_unit": "HPa"})
         elif pressure_unit == 'I':
-            self.__parent.config.config_data["pressure_unit"] = "InHg"
+            self.__parent.config.set_data_dict({ "pressure_unit": "InHg"})
 
+        self.__parent.config.write_config()
 
     def run(self):
         if not self.__parent.is_configured and self.mode != "configure":