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        if ([self testInternetConnection]) {
            
            [MBProgressHUD showHUDAddedTo:self.view animated:YES];
            
            [PreferenceUtils setEmail:self.textFieldEmail.text];
            [PreferenceUtils setPassword:self.textFieldPassword.text];
            
            //LLEVAR A BACKGROUND PARA HACER LA LLAMADA DE WS A SEGUNDO PLANO
            dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
                
                [[LORestManager sharedInstance] createAdmin:self.textFieldEmail.text
                                                   password:self.textFieldPassword.text
                                              returnHandler:^(int messageId, id json) {
                                              
                                                  //LLEVAR AL THREAD PRINCIPAL PARA HACER OPERACIONES DE PANTALLA
                                                  dispatch_async(dispatch_get_main_queue(), ^{
                                                      
                                                      if(messageId>=0){
                                                          self.registered = YES;
                                                          
                                                          [MBProgressHUD hideAllHUDsForView:self.view animated:YES];
                                                          
                                                          [self performSegueWithIdentifier:@"showCreateFamily" sender:self];
                                                          
                                                      } else {
                                                          switch (messageId) {
                                                              case -2:
                                                                  //El email ya existe
                                                                  [self showError:NSLocalizedString(@"Alert_error_-4", nil)];
                                                                  break;
                                                                  
                                                              default:
                                                                  //Error en la comunicación con el WS
                                                                  [self showError:NSLocalizedString(@"error_server", nil)];
                                                                  break;
                                                          }
                                                          
                                                          
                                                      }
                                                  });
                                                  
                                              }];
            });
            

        }
        
        
//En RestManager:
#pragma mark - Admin calls
-(void)createAdmin: (NSString *) user
          password: (NSString*) password
     returnHandler: (void (^)(int,id))handler{
    @try {
        
        NSString* url = [NSString stringWithFormat:@"%@/%@", RESTWSPATH, @"admins"];
        
        NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
        
        NSMutableDictionary *admin = [[NSMutableDictionary alloc] init];
        
        [admin setObject:user forKey:@"username"];
        [admin setObject:password forKey:@"password"];
        
        [params setObject:admin forKey:@"admin"];
        
        [self postRequest:url withParams:params completionHandler:^(NSData *data, NSURLResponse *response, NSError *error){
            
            NSHTTPURLResponse *httpResp = (NSHTTPURLResponse*) response;
            if (!error && httpResp.statusCode == 201) {
                if(data){
                    NSError* error;
                    NSDictionary* json = [NSJSONSerialization JSONObjectWithData:data
                                                                         options:kNilOptions
                                                                           error:&error];
                    NSLog(@"ReceivedJSON: %@", json);
                    if (json && !error) {
                        NSNumber *errorCode = 0;
                  
                        [PreferenceUtils setUserId:json[@"id"]];

                        handler([errorCode intValue],json);
                        return;
                        
                    } else {
                        NSLog(@"Error processing ReceivedJSON: %@", error.localizedDescription);
                    }
                    
                }
            } else {
                if (!error) {
                    NSLog(@"Error getting ReceivedJSON, httpResponse: %@", httpResp);
                } else {
                    NSLog(@"Error getting ReceivedJSON, error: %@", error.localizedDescription);
                }
            }
            if (httpResp.statusCode == 202){
                //Email ya existe
                handler(-2,nil);
            }else {
                handler(-1,nil);
            }
        }];
    }
    
    @catch (NSException *e) {
        NSLog(@"Error getting ReceivedJSON: %@", e.reason );
    }
    
}