vb.net - trying to add a Column to a Table using Visual Studio 2013 xsd Designer

Hi Experts,

I'm using the Visual Studio 2013 xsd Designer to edit a Table.
I want to add a new column.

I've added the column to the Table in the linked database.

When I open the ...DataSet.xsd Designer, I can add the column to the Table.
But I cannot define the Source property (SourceColumn name in DataColumnMapping) for the column, as the Combo box of available choices does not include the desired Column name.

Here's a screen dump of what I see - sglShiftFactor is the column name.



Regards,
Leigh