How to create a category/sucategory list with spry data

Question

I am trying to create a a menu list that looks like this using spry:
Category Name
subcategory1
subcategory2
subcategory3
my mysql query is:
SELECT myp_category_cat.idmnu_cat, myp_category_cat.category_cat, myp_subcat_sct.subcat_sct, myp_subcat_sct.id_sct FROM (myp_category_cat LEFT JOIN myp_subcat_sct ON myp_subcat_sct.idcat_sct=myp_category_cat.id_cat) WHERE myp_category_cat.idmnu_cat=1
i have ben trying to use xpath filtering but i am getting an error. My datasets look like this:
var dsCategories = new Spry.Data.XMLDataSet("myincludes/categories.php", "export/row/category", {sortOnLoad: "category", sortOrderOnLoad: "ascending", distinctOnLoad: true});
var dsList = new Spry.Data.XMLDataSet("myincludes/categories.php", "export/row/subcat");
now i try to combine like this but getting error:
<div spry:region="dsCategories" class="SpotlightAndStacked">
  <div spry:repeat="dsCategories dsList" class="SpotlightAndStackedRow">
    <div class="SpotlightContainer">
      <div class="SpotlightColumn"> {category} {subcat} </div>
    </div>
    <br style="clear:both; line-height: 0px" />
  </div>
</div>
i am now getting a failed to retrieve dataset. Both dataset work perfectly when not combined.

Answer 1

You have to declare all your SPRY Datasets in the region:
div spry:region="dsCategories dsList" class="SpotlightAndStacked">
Kevin