try {
	envTAA.doCall("VO-I-GEVO-SPIEGEL", "ANZEIGEN");
}
catch (TAACondition cnd) {
	if (cnd.cndGroup == "ZZTAAIM1" && cnd.cndCode == 20) {
	        // ZZTAAIM(20) means another ASPX page will be activated,
	        // and we've to quit, untill we're reactivated.
	        return;
	}

	// ZZTAAIM(21) means call was successful, and we can continue,
	if (cnd.cndGroup != "ZZTAAIM1" || cnd.cndCode != 21)) {
	        // error handling
	}
}
// Check state of called module