Problem with Redirecting after setting Public Render Parameter

[mismail]

I'm doing IPC using PRP and after setting the render parameter, I'm redirecting to one of my portlets. But I'm getting the exception:

18:53:38,037 SEVERE [application] java.lang.IllegalStateException: sendRedirect

cannot be called after setPortletMode/setWindowState/setRenderParameter/setRende

rParameters has been called previously

1. javax.faces.el.EvaluationException: java.lang.IllegalStateException: sendRedirec

t cannot be called after setPortletMode/setWindowState/setRenderParameter/setRen

derParameters has been called previously

        at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(Met

1. hodBindingMethodExpressionAdapter.java:102)

        at com.sun.faces.application.ActionListenerImpl.processAction(ActionList

1. enerImpl.java:102)

        at javax.faces.component.UICommand.broadcast(UICommand.java:387)

        at org.ajax4jsf.component.UIDataAdaptorBase.broadcast(UIDataAdaptorBase.

java:1387)

        at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:3

29)

        at org.ajax4jsf.component.AjaxViewRoot.broadcastEventsForPhase(AjaxViewR

• oot.java:304)

        at org.ajax4jsf.component.AjaxViewRoot.processPhase(AjaxViewRoot.java:26

1)

        at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.j

ava:474)

        at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicat

1. ionPhase.java:82)

        at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)

        at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)

        at org.jboss.portletbridge.AjaxPortletBridge.execute(AjaxPortletBridge.j

ava:1163)

I'm using Gatein 3.1 with JSF 1.2 and RF 3.3. Here is my code snippet:

            // Get Faces External Context

            ExternalContext externalContext = (ExternalContext)FacesContext.getCurrentInstance().getExternalContext();

            // Setting deviceId as Public Render Parameter

            Object response = externalContext.getResponse();

            if (response instanceof StateAwareResponse) {

                  StateAwareResponse stateResponse = (StateAwareResponse) response;

                  stateResponse.setRenderParameter("deviceId",deviceId);

            }

            // Redirecting to ClientDetails Page

            try {

                  externalContext.redirect("/portal/private/smartConnect/ClientManagement/ClientDetails?portal:componentId=659554289&portal:action=SelectTab&objectId=720263097&ajaxRequest=false&deviceId="+deviceId);

            } catch (IOException e) {

                  System.out.println("******* Exception during redirect : ");

                  e.printStackTrace();

                  returnStr = "failure";

            }

Please help me what I'm doing wrong?