public UAReturn DataFrameLoad(string dframename, string datasetName, string sheetname)//13Feb2014
{
UAReturn r;
ServerDataSource dataSource = new ServerDataSource(_userSession.DefaultDispatcher, dframename, datasetName, sheetname); //empty filename sent.
r = _userSession.DefaultDispatcher.DataFrameLoad(dataSource, datasetName);
return r;
}