There is a string function called "UpperCase' which you use in a formula.
From the CR Help file under 'String"
--------------------------------------------------------
Typical uses
A good use of this function is when a field contains both uppercase and lowercase letters and you want to convert all letters to uppercase for consistency.
Examples
The following examples are applicable to both Basic and Crystal syntax:
UpperCase("Description")
Returns "DESCRIPTION".
UpperCase({customer.FIRST NAME})
Returns "RONALD", where {customer.FIRST NAME} contains "Ronald".
UpperCase("Ronald Black")
Returns "RONALD BLACK".
UpperCase("abc12345")
Returns "ABC12345".
UpperCase("BrEaD " + "AND " + "bUtTeR" )
Returns "BREAD AND BUTTER".
-------------------------------------
Hope this is what you are looking for.
Regards,
John W.