variable fix

character_radio.change instead of formality_radio.change

app.py

@@ -192,7 +192,7 @@ with block:
 
             character_radio = gr.Radio(label="As if written by:", choices=["The Old Lady Who Swallowed A Fly", "The Old Woman Who Lived In A Shoe", "Mary Had A Little Lamb", "Humpty-Dumpty"],
                                        value=CHARACTER_DEFAULT)
-            formality_radio.change(update_foo,
+            character_radio.change(update_foo,
                                    inputs=[character_radio, character_state],
                                    outputs=[character_state])