class Services{
    func login(User: String, Password: String) -> Bool{
        let parameters: Parameters = ["cLogin":User,
                                      "cPassword":Password]
        Alamofire.request(oSS.uLogin, method: .post, parameters: parameters).responseJSON { (response) in
            switch response.result {
            case .success:
                let result = response.result.value as! NSDictionary
                var errorMessage = result.object(forKey: "IsError")! as! Bool
                if(errorMessage == false){
                    self.Change = true
                }else{
                    self.Change = false
                    print("Message: ", errorMessage)
                }
            case .failure(let error):
                print(error)
            }
        }
        return Change
    }

class LoginViewController: UIViewController {

let oS = Services()
        @IBAction func LoginButton(_ sender: Any) {
        oS.login(User: tUser.text!, Password: tPassword.text!)
        if oS.Change == false {
            print("False")
        }

    }
   }