MvP Ladder script not working

[fallen0519]

Can anyone tell me what's wrong with the script, when players kill MVP, the stats is not shown. Please help me~~ >_<

prontera,162,152,4	script	MVP Ladder	619,{
	mes "[MVP Ladder]";
	mes "Hello!";
	mes "What are you doing here?";
	next;
	switch(select("Check rankings.:My stats.:Nothing...")) {
	case 1:
		mes "[MVP Ladder]";
		query_sql("SELECT char_id,CAST(`value` AS SIGNED) FROM `global_reg_value` WHERE `str` = 'MVP_Rank' ORDER BY CAST(`value` AS SIGNED) DESC LIMIT 20",.@cid,.@value);
		for(set .@i,0; .@i<getarraysize(.@cid); set .@i,.@i+1) {
			query_sql("SELECT `name` FROM `char` WHERE char_id = "+.@cid[.@i]+";",.@j$);
			set .@name$[.@i], .@j$;
		}
		if (!getarraysize(.@cid))
			mes "The rankings are empty.";
		else for(set .@i,0; .@i<getarraysize(.@cid); set .@i,.@i+1)
			mes "["+(.@i+1)+"] "+.@name$[.@i]+" ~ "+.@value[.@i]+" kills";
		close;
	case 2:
		mes "[MVP Ladder]";
		mes "You have killed "+((MVP_Rank)?"^0055FF"+MVP_Rank:"no")+"^000000 MVP"+((MVP_Rank == 1)?".":"s.");
		close;
	case 3:
		close;
OnInit:
waitingroom "MvP Rank",0;
end;
	}

OnNPCKillEvent:
	if (getmonsterinfo(killedrid,22)) {
		set MVP_Rank, MVP_Rank+1;
		if (MVP_Rank == 1)
			query_sql("INSERT INTO `global_reg_value` (`char_id`,`str`,`value`,`type`,`account_id`) VALUES ("+getcharid(0)+",'MVP_Rank','1',3,0)");
		else
			query_sql("UPDATE `global_reg_value` SET `value` = '"+MVP_Rank+"' WHERE char_id = "+getcharid(0)+" AND `str` ='MVP_Rank'");
		dispbottom "~ You've killed "+MVP_Rank+" MVP"+((MVP_Rank == 1)?"":"s")+". ~";
		specialeffect2 313;
	}
	end;
}