abel class="col-sm-1 control-label">operator</label>
                                            <div class="col-sm-3">
                                                  <select id="selecteddataval" class="form-control"  ng-model="x.operator" >
                                                      <option value="In">In</option>
                                                      <option value="NotIn">NotIn</option>
                                                      <option value="Exists">Exists</option