--- loncom/xml/lonxml.pm	2001/09/26 14:43:50	1.130
+++ loncom/xml/lonxml.pm	2001/09/28 18:20:06	1.131
@@ -1098,7 +1098,11 @@ sub get_param {
   if ( ! $context ) { $context = -1; }
   my $args ='';
   if ( $#$parstack > (-2-$context) ) { $args=$$parstack[$context]; }
-  return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
+  if ( $args =~ /my \$$param=\"/ ) {
+    return &Apache::run::run("{$args;".'return $'.$param.'}',$safeeval); #'
+  } else {
+    return undef;
+  }
 }
 
 sub register_insert {