Javascript object to import metadata through xmp file

Hi all,

I am trying to import metadata into the pdf file by perl script. In that using GetJSObject to do it.

$jso = $pddoc->GetJSObject;
$jso->metadata($xmp_data);

here $xmp_data contains xmp file data. i am getting error like this

Win32::OLE(0.1709) error 0x80010105. "The server threw an exception" in METHOD/PROPERTYGET "metadata"

OR is there any other way to set the metadata ie. custom data into the pdf file.
If anybody have idea, please share it. It's urgent task for me....

Thanks,
Vaasu