Subcurrency: Using the IF Statement

Coin.Sent().watch({}, '', function(error, result) {
    if (!error) {
        console.log("Coin transfer: " + result.args.amount +
            " coins were sent from " + result.args.from +
            " to " + result.args.to + ".");
        console.log("Coin balances now:\n" +
            "Sender: " + Coin.coinBalances.call(result.args.from) +
            "Receiver: " + Coin.coinBalances.call(result.args.to));
    }
})