dataSource set to nil

[shuchitgandhi]

I am unable to set values to SOMessage Object (comment for my project) from my View Controller file. It gets set to nil. Here is the source code -->

//
// Message.swift
//

import UIKit

class Message: SOMessage {

// @synthesize attributes,text,date,fromMe,media,thumbnail,type;

override init() {
    super.init()
    self.date = NSDate()
}  

}

//
// CommentsVC.swift
//

import UIKit

class CommentsVC: SOMessagingViewController {

var dataSource: NSMutableArray!

override func viewDidLoad() {
    super.viewDidLoad()

    self.loadMessages()
}

func loadMessages(){

    var comment: Message = Message()
    comment.text = "HI ! This is Sparta !!!"
    comment.fromMe = false
    comment.type = SOMessageTypeText
    comment.date = NSDate()
    dataSource.addObject(comment)

}

override func intervalForMessagesGrouping() -> NSTimeInterval {
    return NSTimeInterval(0)
}

override func messages() -> NSMutableArray {
    return dataSource
}

override func configureMessageCell(cell: SOMessageCell!, forMessageAtIndex index: Int) {

    var message: Message = self.dataSource[index] as! Message;

    println(message.fromMe)

    if (message.fromMe != false) {
        cell.contentInsets = UIEdgeInsetsMake(0, 3.0, 0, 0) //Move content for 3 pt. to right
        cell.textView.textColor = UIColor.blackColor()
    } else {
        cell.contentInsets = UIEdgeInsetsMake(0, 0, 0, 3.0); //Move content for 3 pt. to left
        cell.textView.textColor = UIColor.whiteColor();
    }
}

override func messageInputView(inputView: SOMessageInputView!, didSendMessage message: String!) {

    var msg: Message = Message()
    msg.text = message
    msg.fromMe = true

    self.sendMessage(msg)
}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}