Update app.py

app.py

@@ -744,7 +744,7 @@ messages = [
 # messages.clear()
 
 def classify(platform, UserInput, Images, Textbox2, Textbox3):
-    if UserInput.lower() == "clear history":
+    if UserInput == "clear history":
         messages.clear()
         messages.append(
             {"role": "system", "content": system}