PivotMatrix with server paging

<?php
require_once "CustomersYears.php";
$CustomersYears = new CustomersYears;
$CustomersYears->run()->render();
?>    

<?php
require_once "../../../load.koolreport.php";
use \koolreport\processes\Filter;
use \koolreport\processes\ColumnMeta;
use \koolreport\pivot\processes\Pivot;

class CustomersYears extends koolreport\KoolReport
{
    function settings()
    {
        return array(
            "dataSources" => array(
                "dollarsales"=>array(
                    'filePath' => '../../../databases/customer_product_dollarsales2.csv',
                    'fieldSeparator' => ';',
                    'class' => "\koolreport\datasources\CSVDataSource"      
                ), 
            )
        );
    }
    function setup()
    {
        $this->src('dollarsales')
        // ->pipe(new Filter(array(
        //     array('customerName', 'startsWith', 'a'),
        //     array('orderDate', '>', 2003),
        // )))
        ->pipe(new ColumnMeta(array(
            "dollar_sales"=>array(
                'type' => 'number',
                "prefix" => "$",
            ),
        )))
        ->pipe(new Pivot(array(
            "dimensions"=>array(
                "column" => "orderYear",
                "row" => "customerName, productLine, productName",
            ),
            "aggregates"=>array(
                "sum"=>"dollar_sales",
            )
        )))
        ->pipe($this->dataStore('sales'));  
    }
}

<?php
        use \koolreport\pivot\widgets\PivotMatrix;
        use \koolreport\core\Utility;
        use \koolreport\processes\Filter;
        use \koolreport\processes\ColumnMeta;
        use \koolreport\pivot\processes\Pivot;
        use \koolreport\instant\Widget;
        use \koolreport\datasources\CSVDataSource;
?>

<div class="report-content">  
    <div class="text-center">
        <h1>PivotMatrix with server paging</h1>
        <p class="lead">When there are a lot of rows it's faster for PivotMatrix to use server paging to reduce rendering time 
        </p>
    </div>
    
    <form id='form1' class="form-inline" method="post">

        <?php
        PivotMatrix::create(array(
            "id" => "pivotMatrix1",
            'dataSource' => $this->dataStore('sales'),
            "serverPaging" => true,
            // 'rowCollapseLevels' => array(0),
            'width' => '100%',
            // 'height' => '500px',
            'headerMap' => function($v, $f) {
                switch ($v) {
                    case 'dollar_sales - sum': return 'Total Sales';
                    case 'dollar_sales - count': return 'Number of Sales';
                    case 'dollar_sales - avg': return 'Average Sales';
                    case 'orderYear': return 'Year';
                    case 'orderMonth': return 'Month';
                    case 'orderDay': return 'Day';
                    case 'customerName': return 'Customer';
                    case 'productLine': return 'Category';
                    case 'productName': return 'Product';
                }
                $r = $v;
                if ($f === 'orderYear')
                    $r = 'Year ' . $v;
                $map = array(
                    '1' => 'January',
                    '2' => 'February',
                    '3' => 'March',
                    '4' => 'April',
                    '5' => 'May',
                    '6' => 'June',
                    '7' => 'July',
                    '8' => 'August',
                    '9' => 'September',
                    '10' => 'October',
                    '11' => 'November',
                    '12' => 'December',
                );
                if ($f === 'orderMonth')
                    $r = $map[$v];
                return $r;
            },
            'totalName' => 'All',
            'waitingFields' => array(
                'orderMonth' => 'label',
                'orderDay' => 'label',
            ),
            'paging' => array(
                'size' => 10,
                'maxDisplayedPages' => 5,
                'sizeSelect' => array(5, 10, 20, 50, 100)
            )
        ));
        ?>
    </form>
</div>