Thank you for the advice.
This is actually a field within a data connection. The now () function will be used as part of the unique key. I have tried your suggestion many different ways. The only way I have been able to get this to work is by adding now () to the value f(x) box. This works, but only when the form is first created from the template. It does not update the now function. I need the now () function to be updated whenever the view is changed.
I think that I need to open up the code and use the DateTime.Now.ToString with an onViewChange event...