Local Safe Mode but Global Not

Hi there all,

I run a software house, so I host some of the clients, not too public but have about 100 domains hosted in there.

Anyway, I have clients that need their safe mode to be off,
so what I did was to add "php_admin_value safe_mode off" to this section after <module php4> in httpd.include

But sadly, it only works till the plesk overwrites it.

Anyway suggestions that i can keep it permanent?