I have a problem with 'getProperty' on a Media object.

I have this code:

var media = umbraco.cms.businesslogic.media.Media.GetRootMedias();
var employees = (from m in media where m.Text == "Employees" select m).First();
foreach(var img in employees.Children)
{
    var text = img.Text;
    var id = img.Id;
    var width = img.getProperty("umbracoWidth");
    var height = img.getProperty("umbracoHeight");
    var file = img.getProperty("umbracoFile");
    var all = img.getProperties;
}

'text' and 'id' contains the correct values.

But 'width', 'height', 'file' are all null, and 'all' has a count of 0

In the umbraco backend i can see the width, height and more.

I am trying to make a little program, going through all the pictures in the 'Employees' folder, make sure all of them have a width and a height, some of them was created without this data.

The images i am playing with at the moment does have height and width.

The version is: umbraco v 4.0.2.1 (Assembly version: 1.0.3441.17657) (i know it is ancient, and i can't upgrade)