Decal Issues w/ 1.5

I need to draw a decal on the fly that follows my cursor and conforms to the terrain so that my player can target an area on the ground to place an object. I figured the best way to do this was to expose DecalManager::addDecal() to script via ConsoleMethod.

Here's what I've got...

ConsoleMethod( DecalManager, addDecal, void, 5, 5, "(Point3F pos, Point3F norm, DecalData* decalData)")
{
	Point3F pos;
	Point3F norm;
	DecalData* decal;
	SceneState* temp;
	SceneRenderImage* temp2;
	//pos.z++;
	dSscanf(argv[2], "%g %g %g", &pos.x, &pos.y, &pos.z);
	dSscanf(argv[3], "%g %g %g", &norm.x, &norm.y, &norm.z);
	decal = static_cast<DecalData*>(Sim::findObject(argv[4]));
	object->addDecal(pos, norm, decal);
	object->renderDecal();
}

The data comes across just fine, and it even adds the decal to the Q, but nothing is showing up in game. How do get the DecalManager to fire it's rendering method?

I am open to suggestions if you think there is a better way to do this. (i.e. not using decals at all)