Hi

I am a newbie to umbraco but here is my problem

I have a survey in contour and when I enter a value into a field either a drop down or a textbox it will insert to the db fine. If I don't enter something into the field it will enter a NULL into the db which is fine. Also if I got back to that page in the survey and I change the value to something else non empty, it will update fine. BUT if I go back to erase what is in the textbox OR change the drop down to the first value, the empty string, and save that to the db, it will not save. It keeps whatever non empty value was there before. Anyone have this issue before? Any ideas on how to make it update to the empty string?

Thanks!