JESS: How to stop one ES and start another one?

[Jordi Luir Montasell]

I'm trying to write an application wich makes the use to choose 
the Expert System he/she wants to execute. 
        That's ok right now.
        The problem appears when the user want to start another ES.
        Is there any way to indicate Jesp to stop and to set a new one rete and
jesp object?
        I've tried some java code, but when it doesn't work as expected.

        Any suggestions will be apreciated.

        Thanks everybody
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