public void sortTaskQualityForms() {
     Column columnName = (Column) assignedTaskQualityForms.getColumns()
             .getChildren().get(1);
     if (columnName != null) {
         if (columnName.getSortDirection().equals("ascending")) {
             columnName.sort(false, false);
             columnName.setSortDirection("ascending");
         } else if (columnName.getSortDirection().equals("descending")) {
             columnName.sort(true, false);
             columnName.setSortDirection("descending");
         }
     }
 }