Erroring out when trying to call a custom function from the discoverer repo

Hi everybody, Thanks in advance....
I have a discoverer report giving the shelf life of an item.
The shelf life is to be calculated using a function.
Hence, a custom function is created. I registered the function using Discoverer Administrator Edition.
Then opened my desktop edition and opened the report.
Going to Tools > Calculations > New > Functions > Database > selected the function and changed the parameters passed to the function by going to Items selecting the columns from the tables they are available.
Now, when the query is refreshed, it comes up with an error "Function returns no value".
When tested from sql session, the function returns value.
any idea, as to whts the reason???
-- Kiran

Hi,
Have you validated the function in Discoverer administrator?
Is the function valid?
Have you manually defined the function details or imported directly from the database?
pls. let us know.

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