Hi allI have a custom object A with a field called 'flag' and this object is loaded every month. I want to create a field to be able to add the previous month value to the current month to show total number of flags and the months have to be consecutive. means if last month didnt have any flags, it should not add up to the previus month, only if last month had some value, it should be summed up with curent month value.Wht will be the best approach to do this? I was thinking of roll up summary but they are not in master detail, Formula might work buut i am not sure how.Please help
