===================
From Rcl/RclDMI.cpp
===================

int Rcl_ConfigureExcelDataset(ClientData data, Tcl_Interp* /*interp*/,
                              int argc, char** argv)
{
   RclInterp *rcl = (RclInterp *) data;

   // check the syntax.
   if (argc == 1)
   {
      return rcl->syntaxError(RCL_CFG_DATASET_SYNTAX);
   }

   // note: this is a shortcut - the correct approach would be to get
   //      the edit copy, modify the dataset and apply the edits. in
   //      batch mode this is safe because no other code can
   //      simultaneously edit the dataset.
   ExcelDataset* dataset(
      const_cast<ExcelDataset*>(
         dynamic_cast<const ExcelDataset*>(
            datasetMgr().getDataset(argv[1]))));
   if (dataset == NULL)
   {
      // the dataset doesn't exist or isn't an excel dataset.
      return rcl->Error(RCL_DATASET_INVALID, argv[1], "an Excel");
   }

   // parse the dataset arguments.
   for (int i = 2 ; i < argc ; ++i)
   {
      QStringList opt(QString(argv[i]).split("="));
      if (opt.size() != 2)
      {
         return rcl->Error(RCL_BAD_OPT, argv[i]);
      }

      // note: the excel dataset doesn't validate the workbook or
      //      single run name.
      if (opt[0] == "workbook")
         dataset->setWorkbook(opt[1]);
      else if (opt[0] == "sheet")
         dataset->setSingleRunName(opt[1]);   // <<<<< SET DATASET 1-RUN NAME
      else
      {
         return rcl->Error(RCL_BAD_OPT, argv[i]);
      }
   }

   return TCL_OK;
}
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