How to assign a Dynamic VO to a MessageChoice Bean

Hi,
I have VO developed in jdeveloper. I need to assign this VO to a messagechoicebean on a page. But i cannot extend rootAm, hence i cannot attach the VO to AM and then to mesagechoice bean. Hence i implemented the logic iin processrequest of controller as below:
public void processRequest(OAPageContext pageContext, OAWebBean webBean)
super.processRequest(pageContext, webBean);
OAPageLayoutBean pagelayoutbean = pageContext.getPageLayoutBean();
OAStackLayoutBean stacklayoutbean = (OAStackLayoutBean)pagelayoutbean.findIndexedChildRecursive("xxdbdIROneTimeAddressRN");
OAApplicationModuleImpl am =(OAApplicationModuleImpl)pageContext.getRootApplicationModule();
ViewObject vo = createViewObject("xxdbdGSLCountryVO","dbdcustom.oracle.apps.icx.por.req.server.xxdbdGSLUSAddressVO");
vo.executeQuery();
System.out.println(vo.getDefName());
OAMessageChoiceBean messagechoicebean = (OAMessageChoiceBean)pagelayoutbean.findChildRecursive("dbdCountry");
messagechoicebean.setPickListViewObjectDefinitionName("dbdcustom.oracle.apps.icx.por.req.server.xxdbdGSLUSAddressVO");
messagechoicebean.setViewUsageName("xxdbdGSLCountryVO");
messagechoicebean.setListDisplayAttribute("TerritoryShortName");
messagechoicebean.setListValueAttribute("TerritoryCode");
When i acces the page, i am getting the errors:
Message not found. Application: FND, Message Name: FND_VIEWOBJECT_NOT_FOUND. Tokens: VONAME = xxdbdGSLCountryVO; APPLICATION_MODULE = oracle.apps.icx.por.req.server.RequisitionAM;
Please help me to overcome the issues

1. Sample code to attach custom VO to seeded AM:
ViewObject absVO =am.findViewObject("xxConvertedScrVO"); // here am is application module object
      if(absVO==null)
      absVO=am.createViewObject("xxConvertedScrVO", "abs.oracle.apps.per.selfservice.appraisals.server.xxConvertedScrVO");
    // absVO.setWhereClause(null);
      absVO.setWhereClauseParams(null);
//      absVO.setWhereClauseParam(0,apprID); // use this if required
      absVO.executeQuery();2. In your code
ViewObject vo = createViewObject
("xxdbdGSLCountryVO","dbdcustom.oracle.apps.icx.por.req.server.xxdbdGSLUSAddressVO");while creating VO you have mentioned "xxdbdGSLCountryVO" and "xxdbdGSLUSAddressVO" in the same line. This is not correct.
-Anand

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