How ?
Could you give me an example ?
thx

>You could use a User Defined Function that returned the value you wanted with passed parameters.
>
>Bob
>
>>I thought about that but i don't know how many groups1 i will have and i wanted to let the report to do the "dirty work" :)
>>>Use report variables to sum weight and value, which can then be used in your footer to do the calculation.
>>>
>>>Bob
>>>
>>>>I have this problem with totals
>>>>
>>>>In a report with a kind of structure like this :
>>>>
>>>>group 1
>>>>group 2
>>>> month1 month2 month3 month4 . . . . . month12
>>>>
>>>>weight
>>>>Value
>>>>----------------
>>>>group2 footer
>>>>
>>>>tot weight
>>>>tot value
>>>>-------------
>>>>group 1 footer
>>>>
>>>>well, i can have the totals weight and value using the "calculate" function of reports, but i dont' know how to get the middle price sum(weight) / sum(value)
>>>>
>>>>How can i do ?