--- loncom/homework/grades.pm	2010/12/18 23:09:57	1.640
+++ loncom/homework/grades.pm	2010/12/20 21:23:38	1.641
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.640 2010/12/18 23:09:57 raeburn Exp $
+# $Id: grades.pm,v 1.641 2010/12/20 21:23:38 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2414,12 +2414,11 @@ sub get_last_submission {
                     ($lasthash{$key} eq 'randomizetry')) {
                     my ($ign,@parts) = split(/\./,$key);
                     pop(@parts);
+                    my $id = join('.',@parts);
                     if ($lasthash{$key} eq 'randomizetry') {
-                        my $id = join(',',@parts);
                         $randombytry{$ign.'.'.$id} = $lasthash{$key};
                     } else {
                         unless ($showsurv) {
-                            my $id = join(',',@parts);
                             $typeparts{$ign.'.'.$id} = $lasthash{$key};
                         }
                     }