Bar Chart not shown for Char. displayed as hierarchy Queries

Hello there!

I've got a query where characteristics are displayed as hierarchy. Now, when i view the query in browser and i don't drill down to the deepest level and switch to bar chart, it doesn't show the grahics and displays a message, "Data Provider does not contain any data".

Is this a standard behavior? If yes, why so; otherwise, where have i gone wrong?

Thanks and Best Regards,

DKA.