How do i get the value  of that field

in JSP i have a field like below..
<input type="hidden" id="grpId<%=Index%>" value="<bean:write name='GrpList' property='groupId'/>"/>
In Action class , how do i get the value of that field (i.e id) ?
String value =reques.getparameter (//what ??);

i dont want to change the jsp.
concern is , as the name of the id is dynamic .....so can i get the value in the Action class ?
is there any trick exists ?
I will try not to change any jsp code but will do changes in Action class
Message was edited by:
Unknown_Citizen

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