Titanium Twitter module request method

TiTwitterModule.m

-(void)request:(id)args
{
    ENSURE_UI_THREAD(request,args);
    
    NSDictionary * params    = [args objectAtIndex:0];

    NSString        *urlString      = [params objectForKey:@"url"];
    ENSURE_STRING(urlString);
    NSDictionary * paramDict = [params objectForKey:@"params"];
    NSLog(@"[INFO] params is: %@",paramDict);
    NSLog(@"[INFO] params class is: %@",[paramDict class]);
    
    //    NSString        *method         = [args objectForKey:@"method"];
    id success        = [params objectForKey:@"success"];
    id error          = [params objectForKey:@"error"];
    RELEASE_TO_NIL(requestSuccessCallback);
    RELEASE_TO_NIL(requestErrorCallback);
    requestSuccessCallback  = [success retain];
    requestErrorCallback    = [error retain];
    
    // Do a simple search, using the Twitter API
    TWRequest *request = [[TWRequest alloc] initWithURL:[NSURL URLWithString:urlString] 
                                             parameters:paramDict requestMethod:TWRequestMethodGET];
    
    // Notice this is a block, it is the handler to process the response
    [request performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error)
    {
        if ([urlResponse statusCode] == 200) 
        {
            // The response from Twitter is in JSON format
            // Move the response into a dictionary and print
            NSError *error;        
            NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&error];

            if( requestSuccessCallback != nil ){
                [self _fireEventToListener:@"requestSuccess" withObject:dict listener:requestSuccessCallback thisObject:nil];
            }
        }
        else
        {
            if( requestErrorCallback != nil ){
                [self _fireEventToListener:@"requestError" withObject:[args objectForKey:@"params"] listener:requestErrorCallback thisObject:nil];
            }
        }
    }];
}

Example call:
module.request({
params: {
screen_name: 'marcelpociot',
count: 10
},
url: "http://api.twitter.com/1/statuses/user_timeline.json",
method: 'get',
success: function(e){
alert(e);
},
error: function(e){
alert(e);
}
});