10:20:30 Create new PHPExcel object<br />10:20:30 Set document properties<br />10:20:30 Add some data<br />10:20:30 Define named ranges<br />10:20:30 Rename named ranges<br />10:20:30 Rename worksheet<br />10:20:30 Create new Worksheet object<br />10:20:30 Add some data<br />10:20:30 Resolve range<br />Cell B1 {=PersonFN}: 
Notice: Trying to access array offset on value of type null in /home/belar/public_html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Calculation.php on line 2967
Maarten<br />Cell B3 {=PersonFN & " " & PersonLN}: 
Notice: Trying to access array offset on value of type null in /home/belar/public_html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Calculation.php on line 2967
Maarten Balliauw<br />Cell Person!B1: 
Fatal error: Uncaught Error: Call to a member function getCell() on null in /home/belar/public_html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php:1164
Stack trace:
#0 /home/belar/public_html/vendor/phpoffice/phpexcel/Examples/19namedrange.php(99): PHPExcel_Worksheet->getCell('PERSON!B1')
#1 {main}
  thrown in /home/belar/public_html/vendor/phpoffice/phpexcel/Classes/PHPExcel/Worksheet.php on line 1164