Validation framework does not work for properties of sub-objects

Ian sent this:

I have just started to use the validation framework, and am coming up with some issues. Not sure if I am not doing things correctly, or whether this is a bug.

I am creating a simple registration class - which uses a User object with setters and getter for username and password, as well as a confirmPassword field in the RegisterUserAction.

So:

User has
getPassword()
setPassword()

RegisterUserAction has:
getUser()
setUser()
getConfirmPassword()
setConfirmPassword()

In the register.jsp I have the fields as:

<ww:password label="prompt.password" name="user.password" />

The RegisterUserAction-validation.xml entry as:

<field name="user.password">
<field-validator type="required">
<message>error.value.required</message>
</field-validator>
</field>

The JSP is correctly obtaining and displaying the i18n'd messages for the field name as well as the validation message, but when I enter a value for the password - the validation is not occurring and when I have typed data into the textfield the validation message remains (I can see the data I entered as well as the validation message).

Hope there is some help out there

/Ian