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how to remember the value in h:commandLink inside a h:datatable

 
peter tong
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I have a h:dataTable storing header information, there is a column "refno" which is a h:commandlink (or hutputlink) so user can select that column and jump to the detail page.
My problem is how to remember the refno so I can use it in the detail page?

a simplified code is as follows:
 
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