I was thinking of such solution, but I simply do not know where to put that path of code. Because the HTML is generated only after it returns to .PL.

in .PL i use createBarchart and doesn't have any output, since he creates the file with:

  open ($outfile, ">", $dir.$filename)||die "Couldnt open the file!\n"
+;
    (@outputHead) = createHeader($outfile,$filename);
  
   
  print $outfile " @outputHead\n";
  
  print $outfile "   [@legendArrayBAR],\n";
                       for($j=0; $j<$rows;$j++){
                           print $outfile "['$valueMatrixBAR[$j][0]',"
+;
                               for($i=0; $i<$cols-1;$i++){
                                   print $outfile " $valueMatrixBAR[$j
+][$i+1],";
                                                          if($loop_cou
+nt == $cols-2){
                                                                $line 
+=~ s/,+$//;
                                                              }
                                   $loop_count++;
                                }    
                          print $outfile "],\n";
                       }

                          
                       
    print $outfile "   ]);
                     var options = {
                          'width': 800,   
                                             'height': 400,  
                       title: '$title',
                       hAxis: {title: 'Sprint', titleTextStyle: {color
+: 'red'}}
                     };\n
                     var chart = new google.visualization.ColumnChart(
+document.getElementById('chart_div'));
                                chart.draw(data, options);
                                      }\n";

  
  (@outputFoot) =createFooter($outfile,\@CustomerList,\@SprintList,$fi
+lename);
  print $outfile "@outputFoot\n";
  

  
    #print "Finished writting a file\n";
    

    close ($outfile);
[download]

I hope this code won't confuse you. It has to be like that, so it can be used generally, not just for this case. But there might be sometimes a new Database, and everything I need to add then is the unique ID of that database, and everything should work like that.