--- loncom/homework/radiobuttonresponse.pm	2004/12/23 17:08:22	1.97
+++ loncom/homework/radiobuttonresponse.pm	2005/01/31 22:00:40	1.99
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # mutliple choice style responses
 #
-# $Id: radiobuttonresponse.pm,v 1.97 2004/12/23 17:08:22 albertel Exp $
+# $Id: radiobuttonresponse.pm,v 1.99 2005/01/31 22:00:40 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -114,7 +114,7 @@ sub start_foilgroup {
 }
 
 sub storesurvey {
-    if ( !defined($ENV{'form.submitted'})) { return ''; }
+    if ( !&Apache::response::submitted() ) { return ''; }
     my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1']};
     &Apache::lonxml::debug("Here I am!:$response:");
     if ( $response !~ /[0-9]+/) { return ''; }
@@ -137,7 +137,7 @@ sub grade_response {
     my ($max,$randomize)=@_;
     #keep the random numbers the same must always call this
     my ($answer,@whichfoils)=&whichfoils($max,$randomize);
-    if (!defined($ENV{'form.submitted'})) { return; }
+    if ( !&Apache::response::submitted() ) { return; }
     my $response;
     if ($ENV{'form.submitted'} eq 'scantron') {
 	$response=&Apache::response::getresponse();
@@ -606,7 +606,10 @@ sub end_foil {
 	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
 	if ($value ne 'unused') {
 	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
-	    if (!$name) { $name=$Apache::lonxml::curdepth; }
+	    if (!$name) {
+		&Apache::lonxml::error("Foils without names exist. This can cause problems to malfunction.");
+		$name=$Apache::lonxml::curdepth;
+	    }
 	    if (defined($Apache::response::foilnames{$name})) {
 		&Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
 	    }