this.set("column" , value) method in client modules is not working

Hi

I am executing this small code but it is not reflecting on the edit page. UsrValidateTest is an integer. I am able to see the changes even in debug but not on actual page.

init: function(){

                this.callParent(arguments);

                this.set("UsrValidateTest", 40);

                this.get("UsrValidateTest");

            }

Please help me resolve this. Thanks in Advance.