Partial Close Failing with error ,"15/08/2019 12:34:01.331 | → Failed to close position PID33725619 with error "Order closeVolume 0.20 is not multiple of volumeStep=39000.00."

Hi there,

i am having an issue with the Partial Close. I am wanting the trade to close out 50% of the trade, but it keeps giving the following error

| → Failed to close position PID33725619 with error "Order closeVolume 0.XX is not multiple of volumeStep=XXXXXX.00."

The Code that it is using is as follows:

PositionSize = Math.Round(position.Quantity * (MultiTradeLotClose / 100), LotDigits);
                        double LotStep = Symbol.VolumeInUnitsToQuantity(Symbol.VolumeInUnitsStep);
                        double steps = PositionSize / LotStep;
                        if (Math.Floor(steps) < steps)
                        {
                            PositionSize = Math.Floor(steps) * LotStep;
                        }

Have i got the wrong variables to convert it to a volume? Any help on this would be great.