Hi i am using the below mentioned cord to prepare a bar chart, but the problem i am facing is that on the y axis i.e the category values are coming as 1,2,3.... i want to change the values to something that i want like A,AB,XYZ so on, can someone help me on this

use strict;
use Win32::OLE qw( in with );
use Win32::OLE::Variant;
use Win32::OLE::Const 'Microsoft Excel';
use constant True=> 1;
use constant False=> 0;

my $Excel = Win32::OLE->new('Excel.Application', 'Quit') or die "$!";
$Excel->{'Visible'} = 1;

my $Wkbook = $Excel->Workbooks->Add(); 

  my $sheet1 = $Wkbook->Worksheets(1);
#sample data
  $sheet1->Range("U10:W3")->{Value} = [[ 10, 20, 30  ],
                                        [ 5, 10, 20  ], 
                                        [ 20, 7, 12  ],
                                        
                                        ];

  my $range = $sheet1->Range( "U10:W3");
#add position, size chart1
  my $chartObj = $sheet1->ChartObjects->Add( 2, 2, 600, 290 );
  my $chart = $chartObj->Chart;
      $chart->{ChartType} = 96;
  $chart->SetSourceData($range);

  with($chart, HasLegend=> False , HasTitle=>True);
  $range = $sheet1->Range("U10:W63");

  my $sc = $chart->SeriesCollection(1);


  my $ax = $chart->Axes;


  with($chart->PlotArea->Interior, ColorIndex=>-4142 );

  with($chart, HasLegend=> False , HasTitle=> True );
  with($chart->PlotArea->Border, Color=>0,  LineStyle=> -4142, ColorIn
+dex => -4142);
  with($chart->PlotArea->Interior, Color=> 16777215 );
  with($chart->ChartArea->Font, Size=> 8 );
  my $sc = $chart->SeriesCollection(1);
  my $pt = $sc->Points;



  with( $chart->ChartTitle, Text => 'JX');
  with( $chart->ChartTitle->Font, Name=>'Arial', Size=>14, Bold=>True 
+);
  with( $ax->Item(xlValue), HasTitle => True);

  with( $ax->Item(xlValue)->AxisTitle, Text => "Frequency");


  with( $ax->Item(xlCategory), HasTitle => True);



  with( $ax->Item(xlCategory)->AxisTitle, Text => "Age (Months)");
  with( $sc->Interior, Color => 6697881 );
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