The columnRename function doesn't seem to be working for me. It's a very basic table. Is the ordering incorrect for pipe?

<?php

require_once '../koolreport/koolreport/core/autoload.php';

use \koolreport\KoolReport;
use \koolreport\processes\ColumnRename;

class Node19 extends KoolReport {

    public function settings()
    {

        return array(
            "dataSources"=>array(
                "node19sql"=>array(
                    'host' => 'localhost',
                    'username' => 'xxx',
                    'password' => 'xxx',
                    'dbname' => 'xxx',
                    'charset' => 'utf8',
                    'class' => "\koolreport\datasources\MySQLDataSource"
                ),
            )
        );
    }
    protected function setup()
    {
        $this->src('node19sql')
            ->query("SELECT * FROM node_161")
            ->pipe($this->dataStore('vendor_table_results'))
            ->pipe(new ColumnRename(array(
                "Column 0"=>"NODE ID",
                "Column 1"=>"NODE NAME",
                "Column 2"=>"Web Address",
                "Column 3"=>"URL FORMATTED",
                "Column 4"=>"ECODE",
                "Column 5"=>"DECODE",
            )));
    }
}

FYI the column names are currently UUID's that are unreadable in a report, so they must be changed.

That did it, thanks! Can I pass in a variable that holds the array rather than typing it out? I would like to have the array built at run time through a separate query, since it could change.

Something like this?

    {
        $this->src('node19sql')
            ->query("SELECT * FROM node_161")
            ->pipe(new ColumnRename($column_id_array
            ))
            ->pipe($this->dataStore('vendor_table_results'));
    }