Is ratioMode:ImageCropRatioMode.Height still a valid argument when using the ImageCropper? I have the following code

<ul class="bxslider">
    @{
    char[] splitChar = { ',' };
    string[] ids = CurrentPage.BannerImage.ToString().Split(splitChar, StringSplitOptions.RemoveEmptyEntries);
    foreach(var id in ids)
    {
    var slideImage = Umbraco.TypedMedia(id);
    <li>
        <a href="#">
        <img src="@slideImage.GetCropUrl(607, 354, ratioMode: ImageCropRatioMode.Height)" alt="">
        </a>
    </li>
    }
    }                   
</ul>

I am getting the following error..

The name 'ImageCropRatioMode' does not exist in the current context

Without the ratioMode argument, the image cropper seem to be working. Problem is that when crunched down horizontally (like in iPad view) the container grows vertically, but the image does not.

Thanks for any help

-Roger