Thanks. I used your second suggestion. It works! (Sorry about forgetting a
subject line).

>> I used "boolean(number())" to ensure only numbers would be formatted,
>
>Try xsl:if test="string(number($x))='NaN'"
>
>Or more subtly, xsl:if test="number($x)=number($x)". This will return
false
>only if $x is not-a-number.
>
>Mike Kay



Nick



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