Help with Triggers activating objects in same group

I want to activate a radar (an animated dts, which works with playThread )
when the player comes near it (not collides with it).

My plan was to place a Trigger which covers an area
around the radar and place both the trigger and the
radar in a SimGroup. According to the doc's triggers
will activate ::onTrigger on every object within same
group as the trigger.

The sad thing is that I cant get this to work.
When player enters the trigger my RadarTrigger::onEnterTrigger
is executed, but Radar::onTrigger is never called.

Can anyone help me with this problem. I have read similar
quiestions in the forum without been able to find what I'm
doing wrong. Would really appreciate any help.

Here is my code

// --- the radar
datablock StaticShapeData( Radar )
{
	category = "Misc" ;
	shapeFile = "~/data/shapes/radar.dts" ;
} ;

function StaticShapeData::create(%data)
{
	%obj = new StaticShape()
	{
		dataBlock = %data ;
	}
	return %obj ;
}

function Radar::onTrigger(%this,%obj,%trigger,%state)
{
	if ( %state == 1 )
		%this.playThread(0,"rotate") ;
}

// --- the trigger
datablock TriggerData(RadarTrigger)
{
 	tickPeriodMS = 100;
};

function RadarTrigger::onEnterTrigger(%this,%trigger,%obj)
{
	// This method is called whenever an object enters the %trigger
   	// area, the object is passed as %obj.  The default onEnterTrigger
   	// method (in the C++ code) invokes the ::onTrigger(%trigger,1) method on
	// every object (whatever it's type) in the same group as the trigger.
   	Parent::onEnterTrigger(%this,%trigger,%obj);
}


// In mission file
new SimGroup(RadarTest) {
      new StaticShape(R1) {
         position = "0.902434 11.622 0";
         rotation = "1 0 0 0";
         scale = "1 1 1";
         dataBlock = "Radar";
      };
      new Trigger(T1) {
         position = "-2.10599 13.9702 -0.349939";
         rotation = "1 0 0 0";
         scale = "6.03268 22.0119 1";
         dataBlock = "RadarTrigger";
         polyhedron = "0.0000000 0.0000000 0.0000000 1.0000000 0.0000000 0.0000000 0.0000000 -1.0000000 0.0000000 0.0000000 0.0000000 1.0000000";
      };
   };