iterator in strut 2.0

I used iterator in my strut application like

s:iterator value="resultList" id="resultData" status="stat" > s:hidden name="orderItemsList[%{index}].totalCostPrice" id="%{#costPriceId}" value="%{#resultData.to开发者_运维技巧talCostPrice}"/> /s:iterator>

here,I got an error when its found totalCostPrice value 0(Zero).

s:iterator value="roleList" status="roleList"> s:property value="name" /> s:property value="description" /> /s:iterator>