How to set the parameter selection *optional* for each subreport?

Question

Hi,
I am using Crystal Reprots 11.
I create 10 subreports, and each subreport contains a Parameters Field.
The 10 subreports are put in 10 footer sections in increasing order, i.e. subreport1, subreport2, subreport3, ..., subreport10.
When I use "Print Preview" to take a look at the whole report, CR prompts a "Edit Values" window for selecting parameter values for all 10 subreports.
For example, if I only select parameter values for subreport1 and click "OK", 9 error messages on the "Edit Values" window come out above the selection list box of every other subreports (i.e. subreport2 ~ subreport10) showing that: 'The value is not valid'.
Sometimes, I just want to review some specific subreports but not all.
How should I do to set the parameter selection optional (not mandatory) for each subreport?
Thank you in adavance.
Edited by: Holdup on Feb 17, 2012 3:44 PM

Answer 1

Hi,
Here's how you can make the prompts optional (Assuming you're using CR 2008 or higher):
1) Go into each subreport
2) You should see the parameter in the Field Explorer. Right-click the name and select Edit > Look for an option called 'Optional Prompt'. Set it to true
3) If you have a record selection in the subreport, then you need to modify the selection formula to something like this:
if not(hasvalue({?Parameter_Name})) then True else = {?Parameter_Name}
Hope this helps!
-Abhilash