CREATING HIERARCHIES USING TREEBYNESTINGTABLECOLUMN

hi,

i downloaded TutWD_TreeByNestingTableColum from sdn site.When i tried to buid a new application i m facing some trouble in the following code:

public static void wdDoModifyView(IPrivateTreeTableView wdThis, IPrivateTreeTableView.IContextNode wdContext, com.sap.tc.webdynpro.progmodel.api.IWDView view, boolean firstTime)

{

if (firstTime) {

IWDTreeByNestingTableColumn masterColumn =(IWDTreeByNestingTableColumn) view.getElement("MasterColumn0");

masterColumn.mappingOfOnLoadChildren().addSourceMapping(

"path",

"element");

}

//@@end

}

i m not able to find out what "path" is.when i tried to modify that application new nodes r not getting added.

plz help me.