Thanks to the recent update of TradingConnectorEA to version 1.35, some functionalities and syntax of TradingConnector got simplified, and that's why I'm posting this update. To be exact:
If you're using Moving StopLoss mechanism ('slmod' command) and trading only 1 position at a time (no pyramiding), you don't need to use tradeid= parameter anymore. So it was removed from this script. Tradeid= functionality still exists and performs well - used to point which position exactly has to modified or closed - but is unnecessary coding overhead in single-position-trading. Previously it was required.
P.S. There are further new features, like multiple take-profit levels, breakeven exit, delay or separating from TradingConnector-dedicated alerts from all the others - these features will be covered in other publications soon.