Update app.py

app.py

@@ -258,15 +258,12 @@ with gr.Blocks(css=css_styling, title=page_title, theme=osium_theme) as demo:
         show_progress=True,
     )
     clear_button.click(
-        lambda x: [gr.update(value=None)] * 6,
+        lambda x: [gr.update(value=None)] * 3,
         [],
         [
-            param1,
-            param2,
-            param3,
+            optimal_parameters,
             input_hardness,
             input_yield_strength,
-            formula
         ],
     )