Hi, I'm currently trading an options strategy using IB, and whilst it is possible to get normal spread charting through TWS the charting breaks down when you try to get intraday charting of the bids and asks of an options combo with four legs. So, I've downloaded the desktop version of thinkorswims platform, which has "Prophet" charting (not quite sure what that means though). Here I'm able to chart one contract, but cannot understand how to create my combo and then chart it properly. What I'm looking for is intraday charting for a few days back. If anyone could shed some light on how to do this in thinkorswims platform, point out where the helpfiles are (I can't find ANY!) or let me know it's not doable - I'd appreciate it very much. And also suggestions as to how I can get some good combo charting of options.