Hello, I already asked this question about one year ago, but nobody answered. How can you retrieve datas and submit orders on calendar spreads using TWS DDE API? I understand how to get combination quotes by giving an id to each contract of the spread and defining a combination using contract ids, but I don't think it will give the actual calendar spread contract datas, but a combination of outrights instead. Does someone trade calendar spreads through TWS API? Thanks a lot for your help.