Trouble with JSON parsing in iPhone App

Programmer Question

I've been trying to make this work for some time now, but I think I need someone on the outside to see what I'm doing wrong. In my app, I'm getting a JSON value from a web server, and parsing it into my table view.

responseData = [NSData dataWithContentsOfURL: [NSURL URLWithString: @"http://myserver/json"]];
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
NSDictionary *dict = [responseString JSONValue];
theData = [dict objectForKey:@"data"];

My only problem now, is that 'theData' is apparently a NSString, as far as I am able to see. The following error is what I get from GDB when I call '[theData count]' from my view controller.

-[NSCFString count]: unrecognized selector sent to instance 0x6eb5380

And what my JSON looks like

{
    "code": 100,
    "data": [
    {
        /** Some object */
    }]
}

Find the answer here