JESS: How to access info in a objects cotained in a arraylist.

[Andrew Meng]

Hello,
 
I have a java arraylist collection declared in Jess. In a rule's  defination, I 
want to get some value from a  object contained in arraylist. like, 
(> arraylist[1].getValue("value1")    arraylist[0].getValue("value2") )
 
Can anyone tell me what is the right way to do it in Jess?
 
Thanks a lot in advance!
Andrew
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