How to update Business Object from Bizsolo form

Hi,

I am using Business object on Bizsolo application form where CheckBoxes and Radio Buttons are mapped with BO setters and getters.But when i change the values on form mapped with BO then old values does not updated in BO on form submit.I tried to use sbm.util.setValue() to update BO property but it did not work.Please ssuggest a way in which it can be done.