--- loncom/interface/domainprefs.pm	2018/08/14 21:42:39	1.337
+++ loncom/interface/domainprefs.pm	2018/08/14 22:15:20	1.338
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set domain-wide configuration settings
 #
-# $Id: domainprefs.pm,v 1.337 2018/08/14 21:42:39 raeburn Exp $
+# $Id: domainprefs.pm,v 1.338 2018/08/14 22:15:20 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -11162,7 +11162,7 @@ sub modify_ltitools {
                         if ($env{'form.ltitools_'.$extra.'_'.$i}) {
                             $confhash{$itemid}{$extra} = 1;
                             if ($env{'form.ltitools_'.$extra.'valid_'.$i} ne '') {
-                                my $lifetime = $env{'form.ltitools_'.$extra.'valid_add'};
+                                my $lifetime = $env{'form.ltitools_'.$extra.'valid_'.$i};
                                 $lifetime =~ s/^\s+|\s+$//g;
                                 if ($lifetime =~ /^\d+\.?\d*$/) {
                                     $confhash{$itemid}{$extra.'valid'} = $lifetime;