Does anyone know if there is a limitaion to the amount of arguments that can be passed to a method in a custom assembly? I have quite a few (in order to do some calculations) fields that I have to pass in. When I try to preview the report, it says that there are too many arguments. I have verified that I am passing all the required fields to supply the method. It seems that there isn't any (that I have been able to find) documentation on the limitations of SSRS. I appreciate everyone's ideas!