I have a form that has two option groups, when the user selects one from the first group and then decides to select one from the second group i would like the selection from the first box to clear. In other words only 1 option group can have a selection at a time. I tried an IF statement that basicly stated that when Option group one value is not equal to 0 then set option box two equal to 0. but that didn't work. Any suggestions? Thank you in advance.