Doubling instance data

Hello!

Suppose I have a form input element and want it to be in two different
places in the instance, for example I want

<thread>
  <author>I am</author>
</thread>
<message>
    <author>I am</author>
</message>,

for the author being inserted from only one input. Is it possible anyway?


__
Peter V. Mikhalenko
Lead Developer
Sigent Interactive Agency
peter@sigent.ru