Prevent a certain issue from being reopened after 7 days closed, unless user has the role of "Administrator" or "Supervisor".
Add the Logical validator to the desired workflow transition.
Add the following expression:
%{00016} = "Closed" AND {00057} - {00158} > 7 * {DAY} IMPLIES isInRole(%{00020}, "Administrator") OR isInRole(%{00020}, "Supervisor")
Logical validator
Logical condition