[amibroker] Questions on SetPositionSize and ApplyStop when Pyramiding with ScaleIn

["svatso" <svatopluk.solc@xxxxxxxx>]

Hello,

I am currently backtesting a trend following system both long and
short and can't solve my following method when scaling in with AFL :

My backtester settings are :
  Buy/Sell Price as Open and Delay set to 1
  Round lot size to 10

Basic position size is 5 % of my equity.

For any trade I first open a new position with 50 % of my basic
position size, i.e. 2.5 % of my current equity. 

I then apply stop as stopTypeLoss set to 10 % .

When there is 10 % of profit - I then scale in trade with another half
of my basic position size but I'd like to buy this time exactly the
same number of shares as I bought when first entering the trade.

I then immediately want to reset ApplyStop with stopTypeLoss to exit
the whole position at the price I opend the first half of my position
so that, theoretically, when market will
go against me - I exit this position on stop loss at breakeven.

Thanks for advice.

Svatopluk




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