Hi Jeff,
Try:
SELECT T0.[DocNum], T0.[DocDate], T0.[CardCode],
T0.[CardName], T0.[NumAtCard], T1.[WhsCode],
T1.[ItemCode], T1.[Dscription], T1.[Quantity],
T1.[LineTotal], T0.[Address2]
FROM OINV T0
INNER JOIN INV1 T1 ON T0.[DocEntry] = T1.[DocEntry]
WHERE T0.[Address2] LIKE '%, WA %' AND T0.[DocDate] >=[%1] AND T0.[DocDate] <=[%2]
Thanks,
Gordon