How to get no of copies during print in Flex

Am working on the flex application with print option.

I need to check the print count

my sampl开发者_JS百科e code is

var objPrintJob:PrintJob = new PrintJob();
var image:Image = new Image();
image.source = "assets/1.png";

if(objPrintJob.start() == true)
{
      objPrintJob.addPage(Sprite(image), null, options);
      objPrintJob.send();
      printCount++;
}

I attained the print count but unfortunately I can't get the

no of copies during print. When the user increases the no of

copies i need increment the PrintCount. please help how to get

the no of copies during print in flex

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If I understand correctly, it's just not possible AFAIK (and likely not possible with any web tech?)