How to define Discrete Lot Sizes using Margin ?

Hi,

anyone knows how to control Lot Sizes so that it only jumps in
discrete values when the script controls the Lot Sizes with Margin?

Problem: with Dukascopy the asset UKGilt (and some others) only accepts lot sizes of min 100 and multiples of 100, but not f.i. 120.

My script (on a portfolio of 20 elements) controls the Lots by Margin:

Margin = 0.1 * OptimalF * Capital * sqrt(1 + ProfitClosed/Capital);

and the enterLong (short is similar) is like this:

enterLong(0,-priceClose(0),StopL,0,myTrail,myTrailSlope,1, myTrailStep);

enterLong() would be the same.

Is there any elegant way to define the Lot Size, for this specific asset, in steps of 100 other than using a complex if(Asset == "UKGilt") Lots = (some formula containing Margin); ?

At the time being, i suspended this asset from the portfolio because i get some error messages like

UKGilt: can't open 1207@130 (because it is 1207 and not 1200 !)

Thank you for any idea.

Lots = floor(notRoundedNumber/100)*100;

I mean, as far as I understand, your script will have to have the respective asset selected for the enterLong command to know which one to buy. So setting Lots before calling enterLong should do the trick, no?