Conversion between json and object using SBJson lib

@interface MyObject : NSObject
@property (nonatomic,copy) NSString *property;

- (id)initWithJson:(NSDictionary *)item;
- (id)proxyForJson;

- (id)initWithJson:(NSDictionary *)item {
self = [superinit];
if (self) {
self.property = [itemobjectForKey:@"Property"];
}
return self;
}

- (id) proxyForJson {
return [NSDictionarydictionaryWithObjectsAndKeys:property,@"Property",
nil];
}

NSData *dataReply = [NSURLConnectionsendSynchronousRequest:urlRequest returningResponse:&response error:&error];

NSDictionary *results = [dataReply JSONValue];

MyObject *object = [[MyObjectalloc] initWithJson:results];

MyObject *object = [[MyObjectalloc]init];

NSString*json = [objectJSONRepresentation];