>>>

>>>? WEEK({^2008-12-28},2)

>>>
>>>brought me 53 (what sounds logical to me)... but I'm a little affraid if in others years I'll reach others behaviors... But, anyway... This is what may I use from now own...
>>>
>>
>>Try
>>
>>

>>? WEEK({^2012-12-31},2)
>>

>
>Yeah.. brought me 1
>
>How did you get exactly the value of year 2012 I mean.. did you try all 31 days untill there or has follow any other logic?
>
>to deal with that I just see
>
>

IF  lnweek = 1 AND lnmes>11
>     lnweek			= 53
>endif

>
>sounds not smart.. but??

What about

? WEEK({^2009-01-01},2)

What is your definition of a Week?