How to receive Soybean(CBOT future, ticker= Sc1)streaming price

Hello, I am rying to receive a streaming price of soybean price(ticker=Sc1). streaming_prices = ek.StreamingPrices( instruments = ['Sc1'], fields = ['DSPLY_NAME', 'CF_BID', 'CF_ASK','CF_Last'], on_update = lambda streaming_price, instrument_name, fields : print("Update received for {}: {}".format(instrument_name, fields)) ) streaming_prices.open() I used this code, but it won't work.