Right() Problem?

Ok, I've worked with CF for many, many years now and this one is a first for me. My exception handler trapped the following:

quote:

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An error occurred while evaluating the expression:

#Right(qCardInfo.CardNumber,4)#

Error near line 68, column 32.
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Parameter 2 of function Right which is now "4" must be an integer

The error occurred while processing an element with a general identifier of (#Right(qCardInfo.CardNumber,4)#), occupying document position (68:31) to (68:61) in the template file xyz.cfm.

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I know I'm getting old and I'm not up on the "new math" but I believe "4" is still an integer.

This was CF5. I use logic like this all over so I'm writing this one off as a one time freak event but this resolution does not give me the warm fuzzies. If anyone has any ideas, I would like to hear them.