I just found the key of the problem for Wildfly 8.
The properly sentence for zabbix to monitor jboss on zorka is :
zorka.jmx["java", "A", "B"]
Donde A = ObjectName of MBeam jboss or java and B = Name_Atribute_ObjectName
Example:
zorka.jmx["java", "jboss.as:subsystem=datasources,data-source=ExampleProgram,statistics=pool", "CreatedCount"]
or
zorka.jmx["java", "jboss.as:subsystem=jca,workmanager=default,long-running-threads=default", "currentThreadCount" ]
I hope this help someone ;-).