better try

app.py

@@ -56,11 +56,14 @@ def main():
 	
 	if 	change_example:
 		example = examples[random.randint(0, len(examples)-1)]
+		input_complex_sentence = st.text_area("Please type a Complex Sentence to split",example)
+		split = st.button('Change and Split✂️')
 	else:
 		example=examples[0]
-	input_complex_sentence = st.text_area("Please type a Complex Sentence to split",example)
+		input_complex_sentence = st.text_area("Please type a Complex Sentence to split",example)
+		split = st.button('Split✂️')
 
-	if st.button('Split✂️'):
+	if split:
 		with st.spinner("Spliting Sentence...🧠"):
 			generated_sentence = load_model(input_complex_sentence, model)
 		sentence1, sentence2, _ = generated_sentence.split(".")