OTO Order: Stop Loss +/- pips with respect to fill level

Howdy, while you are working away on the amazing advanced order management module that will kick NT8 and TWS out of the park, please consider including this function...

When placing a limit order with an attached OTO stop loss, please give the option to have the SL level expressed and calculated as pips away from the actual fill level of the limit entry order, rather than a fixed price amount. This is valuable if entry to SL is only a few pips, and slippage is a few pips (it happens) :)