Round producing no value

why is this producing nothing when zero?

=Round(((Fields!FeeGoal_IL.Value) / IIf(Fields!FeeSchedule.Value = 0, 1, Fields!FeeSchedule.Value)) * 100)

actually ever since I changed my format to #,### I think that's the problem

figured it out. It is not obvious in BOL (at least what I read on the lousy BOL for SSRS 2005 - lack of thorough content in SSRS 2005 BOL pages) that you can combine N and 0 so N0 did the trick for the format to format numbers with a comma less decimals (e.g. 1,200) and still render 0 for zero values