Enviroment Map don't work... why?

I'm trying to make a glass, with transparency and some reflections to put in a window.
I follow the steps of Max2DTSExporter Guide and I've read many threads in this forum about emap, but nothing works for me.

So, I made a model and put a material *.png with alpha channel in the diffuse slot and I checked the opacity and reflection and adjusted the reflection value to 50. I used 3DS MAX 7 and export to DTS with MAS2DTS Exporter. I've changed the prefs.cs file in line $pref::environmentMaps = "0"; to 1 and I've created a cs file called window.cs with these lines:

datablock StaticShapeData(window)
{
category = "Misc";
emap=true;
shapeFile = "~/data/shapes/windows/window.dts";
};

function window::onAdd(%this,%obj)
{
%obj.playThread(0,"rotate");
}

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


In game.cs I put this line:
exec("./window.cs");

I place the DTS as an object in my map.

The result is this:


The gray box floating near the gate should be reflective. In this image the opacity is off to better visualization.

Any help, thanks in advance.

Sylker.