In the Rule block, add the following:
set $(DATE) printDate("%d %B %Y", now())
In Action, you can define "%(CURRENT_DATE)" as part of the subject
Under static parameters:
The same can also be used within the email body, under _FORMAT.
***The DATE and CURRENT_DATE variables are user defined.
***The format of the date is defined within the printDate function.
***The userdata definition must be within the rule block's "if" statement.