ganesh yadav

Hi I am new to struts2.
I have a form with a table of a list of values.I had a Edit link for every row.Whenever I am clicking the edit row.It fetch the corresponding values to the edit form.But Whenever I change the values in the form and click submit.Its not updating.I think i have to pass the value of the primary key as hidden value to the Action class method.Please find the below code

List<LicMasterBean> licBeanList = viewAllData(0, noOfRecords, getLicByPolicyNO, null, false);
by this I am getting the values and
setIsEdit("true");

request.setAttribute("Lic", licBeanList); setLicMasterBean(licBeanList.get(0));
now i have set this masterbean as a hidden value in the jsp.Please tell me how to do this.