Shared date variable/4 subreports w/ind. date fields

[RCCRookie]

I'm trying to retrieve a date from 4 subreports using a parameter. I only want the user to enter one date range and have it apply across the entire report. In regards to the subreports one date might be a due date, another a closed date. I think I need to use a shared variable but I don't know how to go about it. There aren't any date fields in the main report vso I'm lost. I hope I'm making sense.
Crystal XI and SQL Server 2000

 

[RCCRookie]

I was able to retrieve the records using a parameter. A variable wasn't needed. Problem solved.