It doesn't bind to maps individually but it i the best method to track deaths, in comparison to other methods such as seeing if anyone dropped to 0 HP in a continuous every second.
Just add a map check with the OnPCDieEvent to compare it to it's instanced version.
OnPCDieEvent:
if( instance_mapname(strcharinfo(3)) == instance_mapname("prontera") ){end;}
dispbottom "A shame. Maybe next time. Come back when your stronger kid.";
instance_destroy;
end;
I don't know why it is like this, but from my tests, the if(statement) needs to be == instead of != to actually end. Otherwise people outside of an instance would trigger the event. But it could just be that my revision is outdated. At any rate, you should be able to properly run a similar check to fit your needs, so that you can perform script functions without interference from other scripts.