How to compare a date with system date in the rtf template

I have a scenario where if DUE_DATE is greater than system date, then it should print Due in black color, and if DUE_DATE is less than system date, then it should print Overdue in red color.

I have used the condition <?xdoxslt:if ORIGINAL_DUE_DATE>sysdate?> for priniting Due and <?xdoxslt:if ORIGINAL_DUE_DATE<sysdate?> for printing Overdue.

But it is printing both the values.

Can you please tell how to print the correct value based on the above condition?

Regards,

Kratika