HP Intelligent Management Center Standard Software Platform - Manual (Page 207)

Check your selection formula closely, and make sure that the spaces in the
selection formula match the spaces in the fields you are trying to match.
Using If statements in selection formulas
When creating record selection formulas that include If statements, always
include the Else keyword; otherwise, no records or unexpected records may
be returned. For example, a record selection such as If {parameter
field} = "less than 100" then {field} < 100
evaluates as
False and returns no records. To correct this problem, complete the formula
with Else True.
Crystal Reports 2008 SP3 User's Guide 207
9 Record Selection
Troubleshooting record selection formulas