need help about universal quest npc

[darking123]

here is my script

//Made by Lunar
//Version 1.6
//6.1.09
- shop quest_shop -1,501:50
prontera,147,173,5, script Dynamic Shop NPC 899,{
set @i,0;
mes "[shop Quest NPC]";
mes "Which item do you wish to obtain?";
mes "Select only one.";
callshop "quest_shop",1;
npcshopattach "quest_shop";
end;
OnBuyItem:
if(.BuildQuest) {
 for(set .e,0; !compare(getarg(.e+1),"Zeny"); set .e,.e+2) {}
 npcshopadditem "quest_shop",getarg(.e+2),getarg(.e)*compare(getarg(.e+1),"SZeny");
 setarray .Shop[.i],getarg(.e+2);
 set .i,.i+1;
 goto Quest_Setup;
}
if(.Shop[@i]!=@bought_nameid) for(set @i,1; 1; set @i,@i+1) if(.Shop[@i]==@bought_nameid) { set .i,@i; callsub Quest_Setup; }
for(set @i,1; !@e; set @i,@i+1) if(.Shop[@i]==@bought_nameid) { set @e,1; set .i,@i; callsub Quest_Setup; }
mes "[shop Quest NPC]";
mes "I require the following:";
for(set @i,0; !compare(getarg(@i+1),"Zeny"); set @i,@i+2) mes "^FF0000" + ((countitem(getarg(@i))>=getarg(@i+1))? "^00FF00":"") + "" + getarg(@i+1) + " " + getitemname(getarg(@i)) + " [" + countitem(getarg(@i)) + "/" + getarg(@i+1) + "]";
if(getarg(@i)) mes "^FF0000" + ((Zeny>=getarg(@i))? "^00FF00":"") + "" + getarg(@i) + " Zeny";
mes "^000000In exchange, I will give you:^0000FF";
for(set @i,@i+2; getarg(@i+1,0); set @i,@i+2) mes getarg(@i+1) + " " + getitemname(getarg(@i));
switch(select("Exchange:" + (((((getiteminfo(@bought_nameid,5) & 1) || (getiteminfo(@bought_nameid,5) & 256) || (getiteminfo(@bought_nameid,5) & 512)) && @equip==0))? "Preview Item":"") + ":No thanks")) {
 case 1:
  for(set @i,0; !compare(getarg(@i+1),"Zeny"); set @i,@i+2) if(countitem(getarg(@i)) < getarg(@i+1)) {
   next;
   mes "You have " + countitem(getarg(@i)) + " " + getitemname(getarg(@i)) + ", while I require " + getarg(@i+1) + ".";
   mes "Please obtain ^FF0000" + (getarg(@i+1)-countitem(getarg(@i))) + " more " + getitemname(getarg(@i)) + "^000000.";
   close;
  }
  if(Zeny < getarg(@i)) {
   next;
   mes "You do not have enough Zeny.";
   mes "Please obtain ^FF0000" + (getarg(@i)-Zeny) + " more Zeny^000000.";
   close;
  }
  for(set @i,0; !compare(getarg(@i+1),"Zeny"); set @i,@i+2) delitem getarg(@i),getarg(@i+1);
  set Zeny,Zeny-getarg(@i);
  for(set @i,@i+2; getarg(@i+1,0); set @i,@i+2) getitem getarg(@i),getarg(@i+1);
  if (compare(getarg(@i,0),"announce")) announce strcharinfo(0) + " has just obtained " + getitemname(@bought_nameid) + "!",bc_all;
  close;
 case 2:
  set @bottomview, getlook(3);
  set @topview, getlook(4);
  set @midview, getlook(5);
  addtimer 1000, strnpcinfo(3)+"::On_Leave";
  set @equip,getiteminfo(@bought_nameid, 5);
  set @view, getiteminfo(@bought_nameid, 11);
  if(@equip != -1 && @view > 0) {
   if(@equip & 1) atcommand "@changelook 3 " + @view;
   if(@equip & 256) atcommand "@changelook 1 " + @view;
   if(@equip & 512) atcommand "@changelook 2 " + @view;
  }
  next;
  goto OnBuyItem;
 case 3:
  close;
}
On_Leave:
atcommand "@changelook 1 " + @topview;
atcommand "@changelook 2 " + @midview;
atcommand "@changelook 3 " + @bottomview;
set @equip,0;
set @view,0;
set @topview,0;
set @midview,0;
set @bottomview,0;
end;
OnInit:
npcshopitem "quest_shop",0,0;
set .BuildQuest,1;
set .i,1;
Quest_Setup:
switch(.i) {
 default: set .BuildQuest,0; set .e,0; set .i,0; end;
 case 1: callsub OnBuyItem,2276,5,5047,1,2243,3,2203,2,4134,1,607,100,100000000,"Zeny",30122,1;
 case 2: callsub OnBuyItem,2276,5,5047,1,2243,3,2203,2,4134,1,607,100,100000000,"Zeny",30124,1;
 case 3: callsub OnBuyItem,2276,5,5047,1,2243,3,2203,2,4134,1,607,100,100000000,"Zeny",30128,1;
 case 4: callsub OnBuyItem,2276,5,5047,1,2243,3,2203,2,4134,1,607,100,100000000,"Zeny",30136,1;
 case 5: callsub OnBuyItem,2276,5,5047,1,2243,3,2203,2,4134,1,607,100,100000000,"Zeny",30140,1;
 case 6: callsub OnBuyItem,2276,5,5047,1,2243,3,2203,2,4134,1,607,100,100000000,"Zeny",30147,1;
 case 7: callsub OnBuyItem,2276,5,5047,1,2243,3,2203,2,4134,1,607,100,100000000,"Zeny",30149,1;
}
}

[Lilith]

Use

compare(""+getarg(n)

Ex:

replace

for(set .e,0; !compare(getarg(.e+1),"Zeny"); set .e,.e+2) {}

to

for(set .e,0; !compare(""+getarg(.e+1),"Zeny"); set .e,.e+2) {}

[plankt]

This is called typecasting. You have an integer and using Lilith method, you turn it in to a string, since compare expects two strings.

If you want to go the other direction, you can use *atoi() to turn a string in to an integer.