Hi, In JBPM_VARAIABLEINSTANCE database table, there is feild called CLASS_. What is the meaning of that field. If execute processinstace as per code in the previous post , the program is creating total 6 variables and inserting into JBPM_VARAIABLEINSTANCE table. The program is not assigning the values to the variables present in the proccess definition. It's creating new varibles with same names and assigning values passed as input through .setVariable(); . after that if we see the table JBPM_VARAIABLEINSTANCE we can find 6 variable , 3 with CLASS_ type "N" and three with CLASS_ "S" . But, I am getting value for only CLASS_ type "S". CLASS_ type variables "N" have null values. Why I am getting duplicate values? What are CLASS_ type N and S? Please guide me. Thanks Jagadeesh View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3976514#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...