In the article right below the declaration of the UpdateTableViaTableValuedParameter stored procedure I populated the table valued parameter with data from a table named PODetailtest:

DECLARE @ProcTableParamExample PODetailTableType

INSERT INTO @ProcTableParamExample

SELECT TOP 750 PurchaseOrderDetailID,

OrderQty,

UnitPrice

FROM PODetailtest

You may just need to scroll down to see it. I hope this helps clarify. Thanks for your interest.