I put this in text function area (because i want the billing fields):
return $order->get_billing_first_name().” “.$order->get_billing_last_name().” “.$order->get_billing_city();
but i got this error:
Uncaught Error: Call to a member function get_billing_first_name() on null in /home/boogaboogr/webapps/fyl/new/wp-content/plugins/woo-order-export-lite/classes/core/class-wc-order-export-engine.php(323) : eval()’d code:1 Stack trace: #0 /home/boogaboogr/webapps/fyl/new/wp-content/plugins/woo-order-export-lite/classes/core/class-wc-order-export-engine.php(323): eval() #1 /home/boogaboogr/webapps/fyl/new/wp-content/plugins/woo-order-export-lite/classes/core/class-wc-order-export-engine.php(383): WC_Order_Export_Engine::validate_defaults(Array) #2 /home/boogaboogr/webapps/fyl/new/wp-content/plugins/woo-order-export-lite/classes/admin/tabs/ajax/trait-wc-order-export-admin-tab-abstract-ajax-export.php(18): WC_Order_Export_Engine::build_file(Array, ‘estimate_previe…’, ‘file’, 0, 0, ‘test’) #3 /home/boogaboogr/webapps/fyl/new/wp-content/plugins/woo-order-export-lite/classes/class-wc-order-export-admin.php(438): WC_Order_Export_Admin_Tab_Abstract->ajax_preview() #4 /home/boogaboogr/webapps/fyl/new/wp-includes/class