Azure.Data.Tables serialization using F#

I am following this article to move data from an Azure data table. Here is a copy of my type:

type GameId(x, y, z, q, r) =
    let mutable etag = x
    let mutable partitionKey = y
    let mutable rowKey = z
    let mutable timeStamp = q
    let mutable id = r
    interface ITableEntity with
        member this.ETag with get() = etag and set(v) = etag <- v
        member this.PartitionKey with get() = partitionKey and set(v) = partitionKey <- v
        member this.RowKey with get() = rowKey and set(v) = rowKey <- v
        member this.Timestamp with get() = timeStamp and set(v) = timeStamp <- v
    member this.Id with get() = id and set(v) = id <- v
    new() = GameId(ETag(),null,null,Nullable<DateTimeOffset>(),null)

When I run it, I get 0 data populating the data structure.

What do I have to do to get the data to populate