How do I get Multiple Contacts returned using .net SDK version 2.101.0

So I downloaded smartsheet-csharp-sdk,

get sheet with the following includes

SheetLevelInclusion.OBJECT_VALUE);

SheetLevelInclusion.FORMAT);

SheetLevelInclusion.COLUMN_TYPE);

SheetLevelInclusion.CONTACT_REFERENCES);

"Level up" the get sheet to 2

Sheet sheet = smartsheet.SheetResources.GetSheet(sheetId, ListOfSLI, null, null, null, null, null, null,null,2);

And when I retrieve rows with that have a column that a "Contact" and have checked the box "allow Mulitiple contacts per cell" the ContactObjectValue is always empty ( I get the right Number, ) Just no values

What Am I doing wrong to retrieve these