Hi,
Thanks for the reply. I am using the sample evalution provided in the (https://github.com/droolsjbpm/jbpm/tree/master/jbpm-installer/sample/evaluation/src/main/resources) . I have attached task forms generated in guvnor and screenshots of execution in my local.
Also,i checked the screencast for jbpm console again and see that varibale 'content' is missing in InstanceData section in my local. This is autogenerated one and I haven't done any changes in the bpmn file.
http://people.redhat.com/kverlaen/jbpm-installer-console.5.2.swf
http://community.jboss.org/servlet/JiveServlet/downloadImage/2-643467-17656/450-200/Instance+data+for+sample+evaluation.JPG