ExportToPdf export in monochrome from V1R5.2

Hi,

With DraftSight V1R5.2 API « ExportToPdf » export PDF in monochrome but in last version ( V1R5.1) the PDF export is in Color.

is it exist an option for genere PDF in monochrome ?

Why the API was changed, i not view in documentation this parameter to monochrome and is it 

Thank’s

Philippe Rossignol