code: public function actionExportExcel2()
      {
          $searchModel = new MahasiswaSearch();
          $dataProvider = $searchModel->search(Yii::$app->request->queryParams);
          
          // Initalize the TBS instance
          $OpenTBS = new \hscstudio\export\OpenTBS; // new instance of TBS
          // Change with Your template kaka
  		$template = Yii::getAlias('@hscstudio/export').'/templates/opentbs/ms-excel.xlsx';
          $OpenTBS->LoadTemplate($template); // Also merge some [onload] automatic fields (depends of the type of document).
          //$OpenTBS->VarRef['modelName']= "Mahasiswa";				
          $data = [];
          $no=1;
          foreach($dataProvider->getModels() as $mahasiswa){
              $data[] = [
                  'no'=>$no++,
                  'nama'=>$mahasiswa->nama,
                  'nim'=>$mahasiswa->nim,
              ];
          }
          
          $data2[0] = [
                  'no'=>'X',
                  'nama'=>'Y',
                  'nim'=>'Z',
              ];
          $data2[1] = [
                  'no'=>'X',
                  'nama'=>'Y',
                  'nim'=>'Z',
              ];
          $OpenTBS->MergeBlock('data', $data);
          $OpenTBS->MergeBlock('data2', $data2);
          // Output the result as a file on the server. You can change output file
          $OpenTBS->Show(OPENTBS_DOWNLOAD, 'export.xlsx'); // Also merges all [onshow] automatic fields.			
          exit;
      }
docs: /*
  EXPORT WITH OPENTBS