[amibroker] Help with PositionSize setting when backtesting

["flintox" <flintox@xxxxxxxxxxxxx>]

Hi

This is probably a really obvious question, so apologies in advance.  

I am trying to back test a system and set my position sizing per 
trade based on a maximum loss of $200 per trade, calculated using my 
max stop loss, but when I backtest this, it is not working.  My max 
losses are all over the place - some are only $15 and others are $400 
so I must have done something wrong.

Below is my code:

InitialStop = 2.5*ATR(30);
TrailStop = 4*ATR(30);
MaxLoss = 200;
PositionSize = MaxLoss/InitialStop;

Sell = 0;

ApplyStop (stopTypeLoss, stopModePoint, InitialStop, 1, False);

ApplyStop (stopTypeTrailing, stopModePoint, TrailStop, 1, True);

Any help would be greatly appreciated.

Regards
Sally






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