if (value != null) {
serviceIndex = Integer.parseInt(value);
}
// load first geometry into model
GeoDataModel geoDataModel = getMainWindow().getGeoDataModel();
ServiceList serviceList = getMainWindow().getGeoDataModel().getServiceList();
geoDataModel.loadGeometry(geoDataModel.loadService(serviceList.getServices().get(serviceIndex++)).getGeometry());
}