I'm trying to set up a smart list with old items that are not yet completed plus items that are due the coming week.

This search phrase works for old items plus items due today:
includeArchived:false dueBefore:tomorrow

I tried to change the last part to read:
includeArchived:false dueWithin:"7 days of today"

This way I only get the items for the coming seven days but not the old ones :-(

Anyone? Thanks :-)