I’m using the following partial close with a EUR/USD mini strategy:

ONCE partialclose = 1
IF partialclose THEN
ONCE PerCent     = 0.9              //%  positions to close
ONCE PerCent2     = 0.01              //%  positions to close
ONCE MinLotSize  = 1              //1  lots minimum
ExitQuantity     = abs(CountOfPosition) * PerCent
LeftQty          = max(MinLotSize,abs(CountOfPosition) - ExitQuantity)
CloseQuantity    = abs(CountOfPosition) - LeftQty

ExitQuantity2     = abs(CountOfPosition) * PerCent2
LeftQty2          = max(MinLotSize,abs(CountOfPosition) - ExitQuantity2)
CloseQuantity2    = abs(CountOfPosition) - LeftQty2
 
IF Not OnMarket THEN
Flag = 1
Flag2 = 1
ENDIF
 
IF LongOnMarket and close >= (PositionPrice + 4*pipsize)  AND Flag THEN
SELL CloseQuantity Contracts AT Market
Flag = 0
endif

IF ShortOnMarket and close <= (PositionPrice - 8*pipsize)  AND Flag2 THEN
exitshort CloseQuantity2 Contracts AT Market
Flag2 = 0
endif
endif

This seems to work and the result is better than without partial close, but I’m getting confused between % and pips, especially as the optimization is so different for long and short (0.9 vs 0.01) ???

The profit target is 0.9% long and 0.5% short. If 0.9% is ~110 pips, how does 4*pipsize relate to that?

I tried using

IF LongOnMarket and close >= (PositionPrice * (1 + PerCentGain))

but it definitely works better with pipsize.