LG WebOS 3.0 TV App - Luna connection manager subscription hanlder

I am developing a TV app for LG 4K TVs in webOS 3.0.

I am using Luna Connection Manager to subscribe network as shown in the LG developers document at http://webostv.developer.lge.com/api/webos-service-api/connection-manager/

I have sample codes as below, and I thought that my subscriptionHandle automatically detects if Network is connected or disconnected, and I can show No Connection message when disconnected.

var connected = false;
var subscriptionHandle = webOS.service.request("luna://com.palm.connectionmanager", {
    method: "getStatus",
    parameters: { "subscribe": true },
    onSuccess: function (inResponse) {
        if (typeof(inResponse.subscribed) != 'undefined') {
            if (!inResponse.subscribed) {
                console.log("Failed to subscribe network state");
                return;
            }
        }
        console.log('inResponse.isInternetConnectionAvailable -- %o ', inResponse.isInternetConnectionAvailable);
        console.log("Result: " + JSON.stringify(inResponse));
        if (inResponse.isInternetConnectionAvailable) {
            connected = true;
            Main.reConnected(); // remove disconnect message
            $('#error').append('Network Connected');
        } else {
             Main.showNoConnection(); // show disconnect message
             connected = false;
            $('#error').append('Network Disconnected'); 
        }
    },
    onFailure: function (inError) {
        console.log("Failed to get network state");
        console.log("[" + inError.errorCode + "]: " + inError.errorText);
        connected = false;
        Main.showNoConnection();
        $('#error').append('Network Disconnected');
        return;
    }
});

After the app is loaded, it doesn't go into the if condition. As a reference, I am printing out the connection status in #error element. It never gets updated. Am I missing more steps to make this work?

What I want to do is when Network is disconnected, show some kind of notification on the screen and when the connection is established, remove the message.

According to LG Developers, "Currently, you should use the luna://com.palm.connectionmanager for the webOS TV 1.0 and the luna://com.webos.service.connectionmanager for the webOS TV 2.0/3.0."

My workaround is to use luna://com.webos.service.connectionmanager and also call subscriptionHandle.getStatus() every 15 seconds.