I wrote a simple sql upgrade script to add a custom attribute to the customer table. My script : < ?php $installer = $this; $installer->startSetup(); $installer->addAttribute('customer', 'whatsapp_active', array( 'type' => 'static', 'input' => 'boolean', 'label' => 'Is Customer Active', 'default' => '1', 'visible' => true, 'required' => false, 'user_defined' => […]