What is wrong in this rdlc expression. When ever the difference is zero it throws error

=iif(Sum(Fields!ClsRead.Value)-Sum(Fields!OpnRead.Value)=0,"NO HSD Supplied",sum(Fields!HSDIssued.Value)/(Sum(Fields!ClsRead.Value)-Sum(Fields!OpnRead.Value))) Answers: Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible. Method … Read more