player gaining points on a specific monster

[Leic]

OnNPCKillEvent:
	  if (killedrid == 1491){
		set $ZPOINTS,$ZPOINTS+rand(0,1);
	  }

 

On the script above, i have set that when you kill a specific monster, you will get random +1 or 0. however, everyone that is killing it on that map recieves also the ZPoints.

 

How can i make it gain only on the person that killed the monster on that map?

[Emistry]

change the variable type from global type to player/account-specific type.

 

[Leic]

thanks