use rowIndx in jsp(in input type hidden )

[ruchabhutada]

I have got rowIndx from :
var $tr = $(this).closest("tr"),
rowIndx = $gridMain.pqGrid("getRowIndx", { $tr: $tr }).rowIndx;

Now I want to use this rowIndx in jsp as input type hidden to display records in pop up window.
I m referring this link:
http://paramquery.com/demos/crud

but I m not getting how do I pass that rowIndx in jsp