Put hidenpc on dupply

[HelloKekette]

Hello,
I would like to add a hidenpc but I do not know how. Because I'm the duplicate, I do not know if it will do all or just one that is ongoing.
 
If you could help me, the idea is to turn it off (just the one in which the player has spoken and not all dupply) after 3 attempts. I try a method, but it's not working :s
 
I use mining found on Rathena. Maybe someone can help me !!!

Edited February 13, 2014 by HelloKekette

[AnnieRuru]

prontera,157,180,5	script	test	100,{

progressbar "", rand(3,6);

if ( .used >= .used_limit ) end;

.used++;

.@rand = rand(.totalchance);

while ( ( .@rand -= .itemchance[.@i] ) >= 0 ) .@i++;

getitem .itemid[.@i], 1;

if ( .used < .used_limit ) end;

hideonnpc strnpcinfo(0);

sleep 10000; // 10 seconds to reappear

hideoffnpc strnpcinfo(0);

.used = 0;

end;

OnInit:

.used_limit = 3; // how many times used until npc is exhausted

setarray .itemid, 501,502,503,504,505,506,507,508,509;

setarray .itemchance, 10,10,10,10,3,10,10,10,10;

for ( .@i = 0; .itemid[.@i]; .@i++ )

.totalchance += .itemchance[.@i];

end;

}