Captcha in Create User Wizard

Question

Hello friends, CreateUserWizard controls in,  Captcha drog drawn from ToolBox. After Create User Wizard Events >>> Creating Event >>> I'am down write. But runTime error, txtCaptcha nonexistent, there in not,,, CaptchaControl1 controls nonexistent...

Where error I'am?

protected void CreateUserWizard1_CreatingUser(object sender, LoginCancelEventArgs e)

{

CaptchaControl1.ValidateCaptcha(txtCaptcha.Text);

if (!CaptchaControl1.UserValidated)

{

return;

}

}

http://img16.imageshack.us/img16/2276/screenhunter04feb07004 4bv5.jpg