var btnSubmit = new TButton('Submit');
var layForm = new TFormLayout();
var vtbPassword = new TValidatableTextBox(300, new TEmptyValidator(), true);
var vtbPassConf = new TValidatableTextBox(300, new TIdentityValidator(vtbPassword, 'Password'), true);
var wndCHVSample = createWindow('Identity Validator Sample');

var onValidate = function() {
      if (vtbPassword.isValid() && vtbPassConf.isValid()) {
         btnSubmit.enable();
      } else {
         btnSubmit.disable();
      }
};

btnSubmit.disable();
vtbPassword.setValue('');
vtbPassword.setOnValidationChanged(onValidate);
vtbPassConf.setValue('');
vtbPassConf.setOnValidationChanged(onValidate);

layForm.add(new TText('Enter Password:'), vtbPassword);
layForm.add(new TText('Confirm Password:'), vtbPassConf);

wndCHVSample.add(layForm);
wndCHVSample.add(btnSubmit);
showModal(wndCHVSample);