--- a/examples/wireless/wifi-ap.cc	Mon Aug 13 10:46:09 2012 -0700
+++ b/examples/wireless/wifi-ap.cc	Mon Aug 13 16:08:13 2012 -0700
@@ -170,8 +170,8 @@
   socket.SetProtocol (1);
 
   OnOffHelper onoff ("ns3::PacketSocketFactory", Address (socket));
-  onoff.SetAttribute ("OnTime", RandomVariableValue (ConstantVariable (42)));
-  onoff.SetAttribute ("OffTime", RandomVariableValue (ConstantVariable (0)));
+  onoff.SetAttribute ("OnTime", StringValue ("ns3::ConstantRandomVariable[Constant=42]"));
+  onoff.SetAttribute ("OffTime", StringValue ("ns3::ConstantRandomVariable[Constant=0]"));
 
   ApplicationContainer apps = onoff.Install (stas.Get (0));
   apps.Start (Seconds (0.5));