-	script	Sample	-1,{
OnNPCKillEvent:
set .@Random,rand(100);
if( .@Random < 1 ){ // 1%
	setarray .@ItemList,501,502,503;
}else if( .@Random < 3 ){ // 3%
	setarray .@ItemList,504,505,506;
}else if( .@Random < 10 ){ // 10%
	setarray .@ItemList,504,505,506;
}else{ // More than 10%
	setarray .@ItemList,504,505,506;
}
if( getarraysize( .@ItemList ) )
	getitem .@ItemList[ rand(getarraysize( .@ItemList )) ],1;
end;
}