Object.prototype.removeNestedProperty = function(key) {
        key = key.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties
        key = key.replace(/^\./, '');           // strip a leading dot
        var keyArray = key.split('.');
        var lastKey = keyArray[keyArray.length-1];
        var refVal = this;
        for (var i = 0, n = keyArray.length; i < n; ++i) {
            var singleKey = keyArray[i];
            if (singleKey in refVal) {
                if(singleKey == lastKey){
                    delete refVal[singleKey];
                    return true;
                }
                refVal = refVal[singleKey];
            }
        }
        return false;
};