[rules-users] RE:Problem Using Update

Hi, I have rule like this rule "Update Id" dialect "mvel" salience 100000 no-loop true when $add:Address(name=="india") then $add.setId("100"); update($add) end am getting the error org.drools.FactException: Update error: handle not found for object and Address <mailto:Address@4b25933f> @4b25933f. Is it in the working memory? what could be the problem? can't i use update?????? Thanks and Regs, basha