hi, how i can get a message from trade offer that i send for someone? set a message: 
t.setMessage("Thanks for buying");
t.send((ERR, STATUS) => {
    if (ERR) {
        console.log("[Trade sending error] " + ERR);
    } else {
        console.log("[Sent]");
    }
}); i tried to get a message like this: 
manager.on("sentOfferChanged", (OFFER, OLDSTATE) => {
    if (OFFER.state == 2) {
		console.log("Trade " + OFFER.id  +" was confirmed.");
		console.log("MY MESSAGE IN TRADERINO: " + OFFER.data("message"));
    } 
});
but OFFER.data("message") returns undefined value