[amibroker] Advice Needed: Setting number of contracts for my Trading System

[dralexchambers]

I'd like to vary the number of contracts per trade in my backtester?

Is it possible to do it in this way?

for (i=1; i<BarCount; i++)
{
if (Buy[i] == 1)
{
NumContracts[i] = xxxxxx;
}
}


My reason for doing this is that:

1. I use 5% of my equity for each trade
2. NumContracts = (5% of equity) / distance from entry to initial
stop loss


If not via NumContracts, is it possible with PositionSize?


Thanks,
Alex