Validation alerts on xforms:input fields

> In my XForm I have bound my model to an external schema definition and instance
> document.
>
> I then display certain fields for the user to edit. If valdiation of the field
> fails against the underlying schema is it possible to display the actual
> validation error message rather than just some text that I have written in the
> alert on the field itself?
>
> <xforms:input ref="urn:MsgId" model="5">
>        <xforms:label class="group-header-label">Msg Id</xforms:label>
>        <xforms:alert>The Message Id is too long</xforms:alert>
>        <xforms:hint>This is a message id field</xforms:hint>
> </xforms:input>
>
>
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