$command_a = $pathto exe . '\\' . $pdfconversion_product.exe;
$command_b = $product.exe  $excelfile.xls  $pdfversion_of_excelfile;

$ppc = Win32::Process::Create(
		$process,
		$command_a,
		$command_b,
		0,
		NORMAL_PRIORITY_CLASS,
		'.'
	);
$process->Wait(INFINITE);