Merge pull request #725 from davecivicrm/CRM-12562

CRM-12562 Mis-named array item check in Batch.php was causing batch upda...

CRM/Event/Form/Task/Batch.php

@@ -201,7 +201,7 @@ class CRM_Event_Form_Task_Batch extends CRM_Event_Form_Task {
           }
         }
         else {
-          if ($field['name'] == 'participant_role_id') {
+          if ($field['name'] == 'participant_role') {
             $field['is_multiple'] = TRUE;
           }
           // handle non custom fields