Netui data repeater?

Question

Hi,
I have a collateralList and collateralId in a form. How do I read the collateralId while iterating though the collateralList?.
<netui-data:repeater dataSource="pageFlow.collateralForm.collaterals">   // returns the collection of collateralBean
   <netui-data:repeaterItem>
     <netui:radioButtonGroup dataSource="container.item.collateralOption">
       <netui-data:repeater dataSource="container.item.collateralList">
      <netui-data:repeaterItem>
                       //trying to read collateralId in the below code.
        <netui:radioButtonOption onClick="enableComment('${container.item}','${pageFlow.collateralForm.collateral[???].collateralId}');" value="${container.item}">
          <netui:label tagId="textLabel" value="${container.item}" />
        </netui:radioButtonOption>
      </netui-data:repeaterItem>
     </netui-data:repeater>
      </netui:radioButtonGroup>
      <c:if test="${container.item.textArea=='true'}">
         <netui:textArea tagId="${container.item.collateralId}" dataSource="container.item.collateralComment" disabled="true"/>
      </c:if>
   </netui-data:repeaterItem>
</netui-data:repeater>
function enableComment(label,collateralId){
     if(label=='Other'){
          document.getElementById(collateralId).enabled="true";
}

Answer 1

I am sorry i missed out one part while explaning my question.
here is my data structure:
     CollateralForm
     private List<CollateralBean> collaterals;
     public List<CollateralBean> getCollaterals() {
          return collaterals;
     public void setCollaterals(List<CollateralBean> collaterals) {
          this.collaterals = collaterals;
     CollateralBean
     private String collateralId;
     private String collateralOption;
     private List<String> collateralList;
     public String getCollateralId() {
          return collateralId;
     public void setCollateralId(String collateralId) {
          this.collateralId = collateralId;
     public String getCollateralOption() {
          return collateralOption;
     public void setCollateralOption(String collateralOption) {
          this.collateralOption = collateralOption;
     public List<String> getCollateralList() {
          return collateralList;
     public void setCollateralList(List<String> collateralList) {
          this.collateralList = collateralList;
     Since outer repeater itself is a collection. I need to know the index to get the value of collateralId. like pageFlow.collateralForm.collaterals[index???].collateralId I see the value for container.item.collateralId in outer loop.