Wijmo 5 [Flex Grid]

Make a single cell read only on pasted event

HTML

<link rel="stylesheet" href="http://cdn.wijmo.com/5.20162.188/styles/wijmo.min.css">
<script src="http://cdn.wijmo.com/5.20162.188/controls/wijmo.min.js"></script>
<script src="http://cdn.wijmo.com/5.20162.188/controls/wijmo.input.min.js"></script>
<script src="http://cdn.wijmo.com/5.20162.188/controls/wijmo.grid.min.js"></script>
<script src="http://cdn.wijmo.com/5.20162.188/interop/angular/wijmo.angular.min.js"></script>
  <div ng-app="app" ng-controller="appCtrl">
        <wj-flex-grid items-source="data"                      
                      control="flex">

        </wj-flex-grid>
        <p ng-show="test == null">
        This is just some text
        </p>
    </div>

JavaScript

var dummyData = [];
        var phases = "asd,agfs,re,asdqwe,xvcwe,wer".split(',');
        var count = 10;
        for (var i = 0; i < count; i++) {
            dummyData.push({
                id: i,
                Phase: phases[i % phases.length],
                Hours: 0,
                EditHours: i%3===0,
            });
        }
        var app = angular.module('app', ['wj']);
        app.controller('appCtrl', function ($scope) {
        		$scope.test = 2323;
            $scope.data = new wijmo.collections.CollectionView(dummyData);
            $scope.$watch('flex', function () {
                var flex = $scope.flex;
                if (flex) {
                    flex.itemFormatter= function (panel, r, c, cell) {
                        if (wijmo.grid.CellType.Cell == panel.cellType) {
                            cell.style.background = '';
                            if (panel.columns[c].binding == 'Hours' && r != flex.rows.length ) {
                                if (panel.getCellData(r, flex.columns.getColumn("EditHours").index) == true) {
                                    cell.style.background = 'red';
                                } else {
                                    cell.style.background = '';   
                                }
                            }
                        }
                    }
                    flex.pastingCell.addHandler(function (s, e) {
                        var row = s.rows[e.row],
                             col = s.columns[e.col],
                             item = row.dataItem; 
                        if (col.binding == 'Hours' && item.EditHours == true) {
                            e.cancel = true;
                        }
                    });
                    flex.beginningEdit.addHandler(function (s, e) {
                        var row = s.rows[e.row],
                            col = s.columns[e.col],
                            item = row.dataItem;
                       ...