Clearing field values after form validation

[Jason Lotz]

I have a simple form that does some server-side validation in the
onValidate() method.  When the form is invalid, I have confirmed that it
correctly calls my onFailure() method which is defined as -

    void onFailure()
    {
        // Clear the previous password and captcha fields.
        password = null;
        confirm = null;
        captcha = null;
    }

These 3 values are form fields that I expect to be blank when I see the
form, but the values are still there.  From what I have read, it seems like
this should be working as I expect.  Can anyone help?

Jason