Hi there,
I read your project and it is interesting. In fact, I have built several projects for Interactive Brokers, including Trading Robots and Order Management systems. I am an IT engineer and I work exclusively with MT4, IB, TradeStation and Financial projects in general.
Regarding the Indicator you want to include in the TWS Charts, I think perhaps you should look into another approach to have this indicator working for IB-TWS, because I think IB removed from its Platform Service the development and import of custom indicators in TWS. So, being this the case, I suggest you to keep this indicator working in MT4, create a Strategy for it, so you can have it trading according to the Indicator Signals, and create a Bridge from MT4 to IB-TWS platform, so all Trade Signals produced by the Indicator at MT4 are sent to TWS. This way you get the Indicator working and all your trades executed at IB-TWS platform.
I can create this Bridge from MT4 to IB-TWS and send you the app in 8 days for the budget I posted on my bid.
Well, I think that is all by now. If you have any question just send a message.
Regards,
Eng. John P.