Building light switch

datablock TriggerData(SwitchTrigger)
{
   // The period is value is used to control how often the console
   // onTriggerTick callback is called while there are any objects
   // in the trigger.  The default value is 100 MS.
   tickPeriodMS = 100;
};

function SwitchTrigger::onEnterTrigger(%this,%trigger,%obj)
{
if(isObject(Light1))
Light1.delete();

else
{
   %light = new sgLightObject(Light1) {
      canSaveDynamicFields = "1";
      position = lightBulb.getPosition();
      rotation = "1 0 0 0";
      scale = "1 1 1";
      dataBlock = "DynamicLight";
      Enable = "1";
      IconSize = "1";
      ParticleColorAttenuation = "1";
   };
}

   Parent::onEnterTrigger(%this,%trigger,%obj);
}

function SwitchTrigger::onLeaveTrigger(%this,%trigger,%obj)
{

   Parent::onLeaveTrigger(%this,%trigger,%obj);
}