use strict;
use Math::BigInt;
use Cwd;
use Time::Local;
use POSIX qw(strftime);

use Win32::OLE::Const 'Microsoft Excel'; # use OLE/Excel
$Win32::OLE::Warn = 3; # die on errors...

<<<...snip...>>>

# Create worksheet after cases data sheet
$act_sheet = $workbook->Worksheets->Add({After=>$ws_data}) or die Win32::OLE->LastError();
#Get current active sheet name
$act_sheet_name = $workbook->ActiveSheet->{Name};	#Get current active sheet name
$act_sheet = $workbook -> Worksheets( "$act_sheet_name" );
$act_sheet->{name} = 'ClosedRegion';	#Change sheet name http://www.perlmonks.org/bare/?node_id=417676

$pv_table = $ws_data->PivotTableWizard( { SourceType=>xlDatabase, SourceData=>$data_rang,
						TableDestination=>'ClosedRegion!R3C1', TableName=>"PivotTable2"} );

$pv_table->AddFields( "Owner Region" );
$pv_table->PivotFields("Owner Region")->{Orientation} = xlDataField;
$pv_table->PivotFields("Owner Region")->{Function} = xlCount;