fix bug

apps/exams/Lib/Action/AdminPaperAction.class.php

@@ -326,7 +326,7 @@ class AdminPaperAction extends AdministratorAction
             exit;
             exit;
         }
         }
         $paper_id = intval($_GET['paper_id']);
         $paper_id = intval($_GET['paper_id']);
-       $b = M('exams_paper')->where(['exams_paper_id' => $paper_id])->save([
+       $b = M('exams_paper')->where(['exams_paper_id' => $paper_id])->update([
             'attache' => '104'
             'attache' => '104'
         ]);
         ]);
        var_dump($b);
        var_dump($b);