I'm having some troubles with this script, for some reason it doesn't let me do this.

Whats the problem with it? How can I solve it?  

public void Reg_Click(){

RegistrationResponse response = new RegistrationRequest().SetUserName("x").SetDisplayName("x").SetPassword("x").Send();        
 if (!response.HasErrors)
        {
            Estado.text = "Sucess";
        }
        else
        {
            Estado.text = "Error";
        }
}

      

        public void Reg_Click()
        {
            new RegistrationRequest().SetUserName("x").SetDisplayName("x").SetPassword("x").Send((response) => {
                if (!response.HasErrors)
                {
                    Estado.text = "Sucess";
                }
                else
                {
                    Estado.text = "Error";
                }
            });
        }

The blocking Send() method doesn't exist anymore since SDK version 5.

Try it like this:

 

        public void Reg_Click()
        {
            new RegistrationRequest().SetUserName("x").SetDisplayName("x").SetPassword("x").Send((response) => {
                if (!response.HasErrors)
                {
                    Estado.text = "Sucess";
                }
                else
                {
                    Estado.text = "Error";
                }
            });
        }