Help With loss recoupment

Hi,

I have two idependent triggers for the same market (horse´s market). One for backing and the other for laying, each one with diferent conditions.

I want that each trigger make the loss recoupment individually but i cant because i use the variable "last_lost".

Example:

Market 1:    Trigger Back(pre market):   [email protected] (selection wins)   p/l- +4,3
                   Trigger Lay                    :   2@10     (selection loses)  p/l   -18

                   Total P/l: -13,7

I want that in this case only the trigger lay make the recoupment, like this:

Next market:  Trigger Back(pre market):   [email protected] (selection wins)   
                      Trigger Lay                    :   [email protected]     (selection loses)