So - it works in client (that is, in preview) but not in browser? Do you mind sharing your template? If not, could you attach it to a reply (under the Options tab) and as soon as I have a chance, I'll update it to point to one of our ShP 2010 installs, publish as a browser form and see if I have the same results.... At least then you'll know if it is an issue with your ShP configuration or with the form itself....