case insensative match on custom criteria

I have two session variables that I need to match in a case insensitive way. When the string is an exact match, my protected configuration custom criteria works... I would have to go lower case several thousand email addresses in AD if I can not do a case insensitive match.

 

 

If case matches:

 

 

session.variable1==session.variable2 works

 

 

If they do not... not match...

 

 

session.variable1~*session.variable2 didn't work either (postgres type regular expressions)

 

 

Please help smart f5 people!

 

 

John