Can't remove an entity record

Question

I am developing my JSF application following the Java Version sample application SRDEMO from Oracle.
I couldn't get remove function work. (there is no "remove" used in the demo).
When the method removeEmployee(Employee employee) is called from MyFacadeClientEmbed which is in "Model" project, it works and the selected employee can be removed.
But when removeEmployee(Employee employee) is called from a sessional managed bean in "ViewController" project, the record is not removed!
in "Sample Java Client File" MyFacadeClientEmbed within "Model":
MyFacade mf = (MyFacade)context.lookup("MyFacade");
Employee theRec = my.findEmployeeById(200);
mf.removeEmployye(theRec);
in "MyPage.java" managed bean in "ViewController" project:
ServiceLocator sl = sl.getInstance;
MyFacadeLocal mfl = (MyFacadeLocal)sl.getFacadeService("java:comp/env/ejb/MyFacade");
Employee theRec = my.findEmployeeById(200);
mf.removeEmployye(theRec);
Any ideas?
Thanks in advance.

Answer 1

Thank you for replying.
I have the environment entry defined:
<ejb-local-ref>
<ejb-ref-name>ejb/MyFacade</ejb-ref-name>
<ejb-ref-type>Session</ejb-ref-type>
<local>MyFacadeLocal</local>
<ejb-link>MyFacade</ejb-link>
</ejb-local-ref>
Other methods, like persist(), work fine and changes are commited to database right after. "Remove" is the only function that seems excuted from ViewController but not committed to database.