function getValueAt(column, dataTable, row) {
       return dataTable.getFormattedValue(row, column);}
 function setLabelTotal(dataTable) {//dataTable must have role: annotation
 var SumOfRows = 0;

 for (var row = 0; row < dataTable.getNumberOfRows(); row++) {
     SumOfRows = 0;
     for (var col = 0; col < dataTable.getNumberOfColumns(); col++) {

         if (dataTable.getColumnType(col) == 'number') {
             SumOfRows += dataTable.getValue(row, col);
         }
         if(dataTable.getColumnRole(col) == 'annotation')
         {dataTable.setValue(row, col, SumOfRows.toString());}
     }
 } }