Vtiger CRM assistance and support

I am trying to number the Quote/Invoice and Sales Order pdf page like 1/1, 2/1, 3/1 ....But can't.I am trying to do this with

$pdf->Cell(0, 10, 'Page '.$this->getAliasNumPage().'/'.$this->getAliasNbPages(), 1, false, 'R', 0, '', 0, false, 'T', 'M'); in the page
vtiger/vtlib/Vtiger/pdf/inventory/contentviewer.php but it couldn't work.

I have tried also this in
vtiger/vtlib/vtiger/pdf/vtiewers/pagerviewer.php
by these changes

$displayFormat=$this->Cell(0, 10, 'Page '.$this->getAliasNumPage().'/'.$this->getAliasNbPages(), 1, false, 'R', 0, '', 0, false, 'T', 'M');
if($this->model) {
$displayFormat = $this->model->get('format', $displayFormat);
}
and in

vtiger/include/inventoryPDFcontroller.php
function buildPagerModel() {
$footerModel = new Vtiger_PDF_Model();
$footerModel->set('format',$displayFormat);
return $footerModel;
}


Please help me, where I am going wrong in the codes.

 

I also tried this way too.
I wrote code in vtigercrm\vtlib\Vtiger\PDF\inventory\FooterViewer.php



$description='Page '.$this->getAliasNumPage().'/'.$this->getAliasNbPages();
$pdf->MultiCell($footerFrame->w, $targetFooterHeight-$descriptionHeight, $description,0, 'L', 0, 1,
$pdf->GetX(), $pdf->GetY());
but still doesn't work
Please Help me

 

yes but they are unable to provide any satisfactory solutions.