Update app.py

app.py

@@ -176,12 +176,10 @@ custom_css = """
     min-height: 300px;
 }
 """
-
+selected_model = model_names[0]
 with gr.Blocks(analytics_enabled=False, css=custom_css) as demo:
     gr.HTML(title)
 
-    selected_model = model_names[0]
-
     with gr.Accordion(label="System Prompt", open=False, elem_id="parameters-accordion"):
         system_message = gr.Textbox(
             elem_id="system-message",