Customizing PDF for generating header image

kinjal

Hi,
I have modified the ZeroClipboard.as and generated .swf file for adding header image in the PDF generated.
Below is the code which I included for header image in my js:
"oTableTools" : {
"aButtons" : [
{
"sExtends" : "pdf",
"sToolTip" : "Export to PDF",
"sButtonClass" : "btn btn-white btn-primary btn-bold",
"sButtonText" : "<i class='fa fa-file-pdf-o bigger-110 red'></i>",
"fnClick": function (nButton, oConfig, flash) {
this.fnSetText(flash, "title:" + this.fnGetTitle(oConfig) + "\n"
+ "headerImage:" +
"/9j/4AAQSkZJRgABAQAAAQABAAD//g.......",
+ "\n"
+ "colWidth:" + this.fnCalcColRatios(oConfig) + "\n"
+ "orientation:" + oConfig.sPdfOrientation + "\n"
+ "size:" + oConfig.sPdfSize + "\n"
+ "--/TableToolsOpts--\n" + this.fnGetTableData(oConfig));
}
}]
}

But on generating the pdf I am not able to see the header image.
Please suggest if my code needs any correction.