--- a/examples/error-model/simple-error-model.cc	Mon Aug 13 10:46:09 2012 -0700
+++ b/examples/error-model/simple-error-model.cc	Mon Aug 13 16:08:13 2012 -0700
@@ -116,8 +116,8 @@
 
   OnOffHelper onoff ("ns3::UdpSocketFactory",
                      Address (InetSocketAddress (i3i2.GetAddress (1), port)));
-  onoff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (1)));
-  onoff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0)));
+  onoff.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=1]"));
+  onoff.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
 
   ApplicationContainer apps = onoff.Install (c.Get (0));
   apps.Start (Seconds (1.0));