yes I have declare it by executing this ...

declare external function f_WeekOfYear
date
returns
integer by value
entry_point 'WeekOfYear' module_name 'FreeUDFLib.dll';

and I have place the FreeUDFLib.dll both on ..\bin and ..\udf to be
sure


is there something wrong?

first I want to thank you ... i reall apreciate your help