How to disable some color when printing separations in Ai CS6-CC (JS)

Hello Everyone!

Configuration: Win 7 Pro x64, Illustrator CS6x64-CCx64, default printer PDF.

When printing separations from Illustrator CS4 following script prints all colors except Cyan (as was intended).

But when printing from CS6-SS disable the color is not possible - all colors are printed without exception.

var adoc = activeDocument; 
var o = new PrintOptions();
o.colorSeparationOptions = new PrintColorSeparationOptions();
o.colorSeparationOptions.colorSeparationMode = PrintColorSeparationMode.HOSTBASEDSEPARATION;
o.colorSeparationOptions.inkList = adoc.inkList; 
for (var i = 0; i < o.colorSeparationOptions.inkList.length; i++) {
 if (o.colorSeparationOptions.inkList.name == 'Process Cyan') {
  o.colorSeparationOptions.inkList.inkInfo.printingStatus = InkPrintStatus.DISABLEINK;
 }
}
adoc.print(o);

If you check, you have inkInfo.printingStatus Cyan changed to "InkPrintStatus.DISABLEINK".

Why it is printed and how to disable?

Thanks!