Usualy I first create a variable called ‘FiveDaysAgo’ like this
AddDays([%currentdate%],-5)
and second: compare the AssignedDate to $FiveDaysAgo:
$modulename/Assigneddate < $FiveDaysAgo
Do note that you can use greater then ( >= ) in your XPaths. So you could still use a scheduled event. I would create a checkDate variable that you fill with the current date time minus 5 days. You then can retrieve all Assigneddates that are greater then that variable and process those to send out the reminder mails.
Regards,
Ronald
You could also take current date, substract the assigned date and divide the difference by 5. If you can divide by 5 and no email has been sent yet, send a mail.