I have defined a rule and specified a web service as action. Rule is violated and instance is created but web service is not get created. Following exception occurs

m.dante.analysis.action.template.context.ActionContextImpl@11b6341
OPTIMIZE) [Analytic Engine v7.1.0.0.com.dante.analysis.action.WebServiceAction.
sActionInvokeAction] 2007-11-28 11:38:59.593 PKT ERROR: electric.soap.SOAPExcep
ion: SBM Web services error :EJB Exception: ; nested exception is:
com.tdiinc.BizLogic.Server.PAKException: EJB Exception: : com.savvion.sb
.bizlogic.util.BizLogicException: (524):User not found !; context(Sessio
Manager.validateUser (u,p))
at com.savvion.sbm.bizlogic.util.SessionManager.validateUser(SessionMana
er.java:184)
at com.savvion.sbm.bizlogic.util.Session.validate(Session.java:137)
at com.savvion.sbm.bizlogic.util.Session.(Session.java:115)
at com.savvion.sbm.bizlogic.util.SessionManager.createSession(SessionMan
ger.java:62)
at com.savvion.sbm.bizlogic.server.ejb.BLServerBean.connect(BLServerBean
java:245)
at com.savvion.sbm.bizlogic.server.ejb.BLServerBean_6zsyh2_EOImpl.connec
(BLServerBean_6zsyh2_EOImpl.java:6907)
at com.savvion.ejb.bizlogic.manager.BizLogicManagerBean.connect(BizLogic
anagerBean.java:273)
at com.savvion.ejb.bizlogic.manager.BizLogicManagerBean_54luf4_EOImpl.co
nect(BizLogicManagerBean_54luf4_EOImpl.java:4377)

This is probably just because of missing web service parameters values. Can anyone please tell me how to give parameter values in WSAction Settings.