Returning @@IDENTITY FROM Stored Proc

I am trying to get the identity of an inserted record using this SP:

<code>
ALTER PROCEDURE acereal_Admin.AuctionInsertCommand
(
    @AuctionID Int OUTPUT,
    @StartDate char(255),
    @StartTime char(255),
    @Location char(255),
    @Title char(255),
    @Description char(255),
    @Images char(255)
)
AS
INSERT INTO Auctions
(
    StartDate,
    StartTime,
    Location,
    Title,
    Description,
    Images
)
VALUES
(
    @StartDate,
    @StartTime,
    @Location,
    @Title,
    @Description,
    @Images
)

SELECT     AuctionID AS ID
FROM         Auctions
WHERE     (AuctionID = @@IDENTITY)
</code>

Then, I am using this class for a file called dataaccess.cs to return the ID:

<code>
public string SaveImageName(string ImageName, string AuctionID)
        {
            SqlConnection
sqlConnection = new
SqlConnection(ConfigurationSettings.AppSettings["ConnectionString"]);

           
this.newSqlCommand = new
System.Data.SqlClient.SqlCommand("[AuctionImageSave]", sqlConnection);
           
this.newSqlCommand.CommandType =
System.Data.CommandType.StoredProcedure;

            SqlParameter
paramImagePath = new System.Data.SqlClient.SqlParameter("@ImagePath",
System.Data.SqlDbType.Char, 255);
            paramImagePath.Value = ImageName;
            this.newSqlCommand.Parameters.Add(paramImagePath);

            SqlParameter
paramAuctionID = new System.Data.SqlClient.SqlParameter("@AuctionID",
System.Data.SqlDbType.Int, 4);
            paramAuctionID.Value = AuctionID;
            this.newSqlCommand.Parameters.Add(paramAuctionID);

            SqlParameter
paramImageID = new System.Data.SqlClient.SqlParameter("@ImageID",
System.Data.SqlDbType.Int, 4);
            paramImageID.Direction = ParameterDirection.Output;
            this.newSqlCommand.Parameters.Add(paramImageID);

            //Return SqlDataReader Struct
            this.newSqlCommand.Connection.Open();
            this.newSqlCommand.ExecuteNonQuery();
            this.newSqlCommand.Connection.Close();

            int returnID = (int)paramImageID.Value;

            return returnID.ToString();
        }
</code>

The above code returns null.

Can anyone tell me what I am doing wrong?

THanks, Justin.