Hi Maciej Swiderski,
Thanks the taskorm.xml works. :)
I took the war file from "\jboss-as-7.0.2.Final\standalone\deployments\jbpm-human-task-war.war"
extracted the war, and look into folder "\WEB-INF\classes\META-INF"
I have only persistence.xml inside that folder, so the taskorm.xml does not replace anything when I pasted the file there.
Now I can see the task in the group tab task list. Thank you for helping me :)
Regards,
Thomas Setiabudi