foreach my $attr (@ds) { 
    
    
    my $ds_tag= new XML::Twig::Elt( 'ds'); 
    $ds_tag->paste( 'after', $attr);
   
	my $unknown= "0";          
	my $unknown_tag= new XML::Twig::Elt( 'unknown_sec', $unknown); 
	$ds_tag->paste( 'after', $attr);
  

	    my $comment= " PDP Status ";          
 	    my $comment_tag= new XML::Twig::Elt( '!--', $comment); 
	    $comment_tag->paste( 'after', $attr);
    

	my $min= "NaN";          
	my $min_tag= new XML::Twig::Elt( 'min', $min); 
	$min_tag->paste( 'after', $attr);


    $ds_tag= new XML::Twig::Elt( 'ds'); 
    $ds_tag->paste( 'after', $attr);

}