After a click on "create new web sale order" the following exception occurs:

javax.faces.FacesException: /task.jsp(30,2) According to TLD or attribute directive in tag file, attribute test does not accept any expressions
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:411)
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:280)
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:110)
org.jbpm.webapp.filter.AuthenticationFilter.doFilter(AuthenticationFilter.java:25)
org.jbpm.webapp.filter.PersistenceFilter.doFilter(PersistenceFilter.java:28)
org.jbpm.webapp.filter.ContextFilter.doFilter(ContextFilter.java:19)
org.jbpm.webapp.filter.LogFilter.doFilter(LogFilter.java:38)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)

The problem comes from the c-1_0.tld file:

<attribute>
<name>test</name>
<required>true</required>
<rtexprvalue>false</rtexprvalue>
</attribute>

the rtexprvalue value must be set to true:

<attribute>
<name>test</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>