issue with changing select control values inside repeat table

Hi,

I am facing an issue with a select control which occurs inside a repeat table.

I have a repeat table whose id is VehicleDetails with 2 combo boxes say, ‘make’ and ‘model’. An Add button adds more rows to the repeat table.

I need to load the Model combo based on the make selected in the make combo. So, on the value changed event of make, I do an xforms submission which loads all the model corresponding to the make to the instance INST_cmbModel

<xforms:repeat id=”VehicleDetails” nodeset="instance('main')/PAGE1/tblVehicles[position()&lt;last()]" >

          <xforms:select1 ref=”make”>

                   <xforms:itemset nodeset="instance('INST_cmbMake')/item">

                              <xforms:label ref="label"></xforms:label>

                              <xforms:value ref="value"></xforms:value>

              </xforms:itemset>

<xforms:send submission="populateModel" ev:event="xforms-value-changed"></xforms:send>

          </xforms:select1>

<xforms:itemset nodeset="instance('INST_cmbModel')/data/item">

                              <xforms:label ref="label"></xforms:label>

                              <xforms:value ref="value"></xforms:value>

              </xforms:itemset>

          </xforms:select1>

</xforms:repeat>

<xforms:trigger>

                     <xforms:label>Add</xforms:label>

                     <xforms:insert at="index('VehicleDetails')" nodeset="instance(‘main’)/PAGE1/tblVehicles" position="after" ev:event="DOMActivate"> </xforms:insert>

</xforms:trigger>

Submission which populates Model:

  <xforms:submission action="PopulateModel.action" id="populateModel" method="post" ref="instance('INSTANCE')/PAGE1/tblVehicles[index('VehicleDetails')]/make" replace="instance" instance="INST_cmbModel">

The instance that is replaced (INST_cmbModel) is:

         <xforms:instance xmlns="" id="INST_cmbModel">

            <main>

             <data>

<item><label/><value/></item>

</data> 

</main>

         </xforms:instance>

The issue is that:

I changed the value in the ‘make’ combo of the 1^st row and corresponding model loaded in the model combo of the 1^st row. Now I added a 2^nd row using Add button. On value changed event of the make combo of the 2^nd row, I do a submission which replaces the instance INST_cmbModel. So the ‘model’ in the 2^nd row as well as the 1^st row gets changed corresponding to the make selected in the 2^nd row [ because the model combo in both rows refer to the same nodeset]. How can I maintain the model list in the 1^st row while chaging the make in the 2^nd row?

I did some workarounds as inserting multiple <data> nodes to 'INST_cmbModel' on value changed event of make and changing the nodeset of model combo to instance('INST_cmbModel')/data[index('VehicleDetails')]/item; but still the issue is there because when I click on the 2^nd row, index('VehicleDetails') becomes 2 and this gets affected for the model in the 1^st combo too.

Please suggest a solution so that on value changed event of the Make combo, only the corresponding model changes. I’m almost stuck with this issue.

Thanks in advance

Jency