I found a solution. You need to add an IIF within the Sum statement that evaluates the value of a field and if true, refers to the numeric field...

I was able to solve this issue. I create a hidden column group that only contained the first year which I know from the parameter array. I then...

I put the RDL in the directories mentioned above and restarted Visual Studio, but I still don't see the template when I create a new project.