Multiple Tables problem in crystal report... help!!

dear all
i have problem in Multiple Tables with crystal report data does not appear even if i made it for only one table it is work and i already made relations between tables but nothing happen
i follow both topics
http://vb.net-informations.com/cryst...ple_tables.htm
http://csharp.net-informations.com/c...ple-tables.htm
but nothing appear however query work fine (SELECT product_reg.product_name,store.product_qouta FROM product_reg INNER JOIN store ON product_reg.product_name = store.product_name)
i tried both in crystal report data source ( ado.net dataset or current connections) both is the same no data appear

help guys please