Javascript 传递一个标志，指示文件中的所有块在ng流中都已完成

我是flow的新手，我正在尝试找出是否有方法可以发送一个标志来指示给定文件中的所有块都已完成

这是我的html

    <div ng-controller="filesCtrl" flow-init=" config" flow-name="uploader.flow">
        <div class="drop" flow-drop ng-class="dropClass">
            <span class="btn" flow-btn><i class="icon icon-file"></i>Select File</span>
            <a class="btn btn-small btn-success" ng-click="upload()">Upload</a>
        </div>
    </div>

但查询永远不会被isComplete填充，有什么方法可以实现这一点吗

    function filesCtrl($scope) {
    $scope.uploader = {};
    $scope.config = {
            target: 'api/check/Upload',
            permanentErrors: [404, 500, 501],
            maxChunkRetries: 1,
            chunkRetryInterval: 5000,
            simultaneousUploads: 4,
            singleFile: true,
            headers: { id: 5, source: 'flow_header' }
    }
    $scope.upload = function () {
        $scope.config = {
            query: { flowChunkComplete: $scope.uploader.flow.files[0].isComplete() },
        }
        $scope.uploader.flow.upload();
    }    
}