Error Create on-demand process

Question

hi master
i try to create ajax select list follow http://htmldb.oracle.com/pls/otn/f?p=11933:37:3536231966135114::NO:::
-- first i create item TEMPORARY_ITEM --> Text Field
in HTML Table Cell Attributes i fill with onblur="get_AJAX_SELECT_XML(this,'P37_SELECT_DROP_XML')"
--2
i create item P37_SELECT_DROP_XML type Select List
list of value definition is
select street_address d,location_id v
from locations
where country_id = :temporary_item
--3
in HTML Header in Page -- Below Page Randering , copy this
<script language="JavaScript1.1" type="text/javascript">
function get_AJAX_SELECT_XML(pThis,pSelect){
     var l_Return = null;
     var l_Select = $x(pSelect);
     var get = new htmldb_Get(null,$x('pFlowId').value,'APPLICATION_PROCESS=otn_Select_XML',0);
     get.add('TEMPORARY_ITEM',pThis.value);
     gReturn = get.get('XML');
     if(gReturn && l_Select){
          var l_Count = gReturn.getElementsByTagName("option").length;
          l_Select.length = 0;
          for(var i=0;i<l_Count;i++){
               var l_Opt_Xml = gReturn.getElementsByTagName("option");
               appendToSelect(l_Select, l_Opt_Xml.getAttribute('value'), l_Opt_Xml.firstChild.nodeValue)
     get = null;
function appendToSelect(pSelect, pValue, pContent) {
var l_Opt = document.createElement("option");
l_Opt.value = pValue;
     if(document.all){/* why is ie different ask bill */
          pSelect.options.add(l_Opt);
          l_Opt.innerText = pContent;
     }else{
          l_Opt.appendChild(document.createTextNode(pContent));
          pSelect.appendChild(l_Opt);
</script>
... but when create on-demand process , there is error , step are
-- under page rendering, in process (+) , i select category on-demand,
name is otn_Select_XML , when i click next show the error message
1 error has occurred
To create an on-demand page process, at least one application level process must be created with the type 'ON-DEMAND'.
how to solve this error ??
is i'm wrong with this step to create ajax select list ?
i use apex 3.1
thanks
Imansyah

Answer 1

Imansyah,
Instead of creating page level "On Demand - Run an "on-demand" application process", you need to create application level on demand process named "otn_Select_XML". To create:
1. Go to Shared Components
2. Click Application Processes
3. Click Create
4. Select On Demand as process point.
- Christina