Razor Error bug

Hello, 

I'm using Umbraco 6.0.4

I tried to use one if the code samples from the Umbraco website (which I downloaded from Umbraco website)  to a Macro Script (Developers - Scripting Files) but always got the following error:

"cs(433): error CS1513: } expected"

And this is the code I use - just copy-paste - didn't change nothing - I took it from here:

http://umbraco.com/help-and-support/video-tutorials/umbraco-fundamentals/razor-recipes/news.aspx

@{
    var pagesToList = @Model.Children.Where("Visible");

    //Check macro param is not empty, if so default to 6 otherwise use the Parameter value
    var itemsPerPage = String.IsNullOrEmpty(Parameter.noPerPage) ? 6 : int.Parse(Parameter.noPerPage);
  
    //Count number of items from pagesToList variable
    var numberOfItems = pagesToList.Count();
    
    //Set the currentPage to 1
    int currentPage = 1;

    /*
        If we cannot parse a number from requesting the querystring param 'page' then set to 1,
        otherwise set the querystring value to our currentPage variable
    */
    if (!int.TryParse(HttpContext.Current.Request.QueryString["Page"], out currentPage))
    {
        //No querystring found or not a number, so set currentPage to 1
        currentPage = 1;
    }
    
    //Subtract one from the currentPage variable (to use a zero based index, first page = 0)
    currentPage--;

    //Number of Pages (Maths time!)
    /*
        Divide the numberOfItems by itemsPerPage and then round the number up to 
        next whole number and add one to the result (eg: 5.1 = 6 + 1 = 7) 
    */
    var numberOfPages = Math.Ceiling((decimal)numberOfItems / (decimal)itemsPerPage);
    
    
    //Display the items in groups of 3 wrapped with a <div>
    <div id="gridText">
        @* 
            For each newsItem from our source (pagesToList)
            Where the page querystring = 2 /currentPage = 1...
            Skip over 6 records (currentPage * itemsPerPage) eg: 1*6 = 6
            Take 6 records, which grabs 7,8,9,10,11 & 12
        *@
        @foreach (var itemGroup in pagesToList.Skip(currentPage*itemsPerPage).Take(itemsPerPage) .InGroupsOf(3))
        {
           <div class="group">
                @foreach (var newsItem in itemGroup)
                {
                    var newsCopy = newsItem.BodyText;
                    newsCopy = Library.StripHtml(newsCopy);
                    newsCopy = Library.Truncate(newsCopy, 50, true);
            
                    <article class="item">
                        <h3><a href="@newsItem.Url">@newsItem.Name</a></h3>
                        <p>@newsCopy</p>
                    </article>           
                }
            </div>
        }
    </div>
    
    
    <ul id="paging" class="group">
    @{
        /*
            pageQuerystring = 1 == 0 = currentPage
            pageQuerystring = 2 == 1 = currentPage
        */        
        
        //PREVIOUS Link
        <li>
            @if (currentPage > 0)
            {
                <a href="?page=@(currentPage)">&laquo; Previous</a>
            }
            else
            {
                <span class="pagingDisabled">&laquo; Previous</span>
            }
        </li>

        
        //Create a variable 'pages' that stores from 1 to the numberOfPages variable
        var pages = Enumerable.Range(1, (int)numberOfPages);
        
        //Loop through the numbers in the Pages variable
        foreach (var number in pages)
        {
            <li>
                @if (number - 1 != currentPage)
                {
                    <a href="?page=@number">@number</a>
                }
                else
                {
                    <span>@number</span>
                }
            </li>
        }

        //NEXT Link
        <li>
            @if (currentPage < pages.Count() - 1)
            {
                <a href="?page=@(currentPage + 2)">Next &raquo;</a>
            }
            else
            {
                <span class="pagingDisabled">Next &raquo;</span>
            }
        </li>
    }
    </ul>
}

Now, the line that cause the error is this:

 if (!int.TryParse(HttpContext.Current.Request.QueryString["Page"], out currentPage))
    {
        //No querystring found or not a number, so set currentPage to 1
        currentPage = 1;
    }
    

The wired thing is that if for example I put it into <span> </span> there isn't error... 

I can live without the "If" statement but the point is that I want to add also switch statment to this code (in order to handle each category) - but I can't do it with this error - did anyone had also this error?

How do I solve it? I tried to add as many "}" as possible but it's not accept it - the error just keep show.

Thanks