Hi Stewman,
In SSRS you don't need the 'then' or 'else' text in a IIF statement.
example:
=iif(fields!type.value in ('firsttype','secondtype'), '*', iif(sum(fields!cost.value,"GroupingName")=0, '*', 'Elsevaluegoeshere'))
The first test is in blue, the result if true is in blue bolded, the...