interface/web/sites/form/web_vhost_subdomain.tform.php
@@ -111,6 +111,13 @@ 'domain' => array ( 'datatype' => 'VARCHAR', 'formtype' => 'TEXT', 'filters' => array( 0 => array( 'event' => 'SAVE', 'type' => 'IDNTOASCII'), 1 => array( 'event' => 'SHOW', 'type' => 'IDNTOUTF8'), 2 => array( 'event' => 'SAVE', 'type' => 'TOLOWER') ), 'validators' => array ( 0 => array ( 'type' => 'CUSTOM', 'class' => 'validate_domain', 'function' => 'sub_domain',