Hi all,
I am backtesting a system where whenever i go wrong ( i.e. 
  if the trade results in a loss) i double the size of the bet. 
So i 
  need to modify the entry size under the Buy order / sell order tab, i tried 
  using Simulation.CurrentPositionPerformance, and 
  Simulation.CurrentPositionSize which resulted in an error. 
Can 
  someone please help in that. 
Thanks.