Does anyone here use ActiveX to connect to IBs API? I can't figure out how to use the extended order attributes. I am using Matlab to call the ActiveX events and methods. The code I use to place an order is: tws.placeOrder(id, action, quantity, symbol, secType, expiry, strike, right, multiplier, exchange,'', currency, orderType, lmtprice, auxPrice, goodAfterTime, faGroup, faMethod, faPercentage,faProfile,goodTillDate); Where do the extended order attributes fit into this or what method do I use to set them? I am new to ActiveX. All the programing I've ever done has been in Matlab.