Is Hong Myung-bo's overall national team career positive or negative in terms of WAR?

As a player + as a manager
When combining both
Looking at his career with the Korean national football team
Is it positive or negative?
If you add his positive contributions as a player
And subtract his negative contributions as a manager
His WAR must have dropped significantly
(Excluding his activities as a youth national team manager or coach,
and only including his time as a senior national team player and manager)