how to fire ng-change event through spacebar key for a input type checkbox which is present in li element

<li ng-repeat="currentValue in model.bindedValueTemp | value: model.valueSearchText | orderBy: 'Value'"  tabindex="5">
        <label>
            <input type="checkbox" ng-model="model.ValueModel[model.selectedValue.Key][currentVal.Value]"  ng-change="Result(model.selectedValue.Key, currentValue.Value)" />
            <span></span>
        </label>
        <span class="item"></span>
</li>