--- loncom/interface/lonnavmaps.pm	2007/11/20 00:26:17	1.405
+++ loncom/interface/lonnavmaps.pm	2007/11/20 17:53:46	1.406
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Handler
 #
-# $Id: lonnavmaps.pm,v 1.405 2007/11/20 00:26:17 albertel Exp $
+# $Id: lonnavmaps.pm,v 1.406 2007/11/20 17:53:46 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -3819,12 +3819,13 @@ sub awarded {
 sub duedate {
     (my $self, my $part) = @_;
     my $date;
-    my $interval=$self->parmval("interval", $part);
+    my @interval=$self->parmval("interval", $part);
     my $due_date=$self->parmval("duedate", $part);
-    if ($interval =~ /\d+/) {
-	my $first_access=&Apache::lonnet::get_first_access('map',$self->symb);
+    if ($interval[0] =~ /\d+/) {
+       my $first_access=&Apache::lonnet::get_first_access($interval[1],
+                                                          $self->symb);
 	if (defined($first_access)) {
-	    $interval = $first_access+$interval;
+           my $interval = $first_access+$interval[0];
 	    $date = (!$due_date || $interval < $due_date) ? $interval 
                                                           : $due_date;
 	} else {