Possible error with setarray

[Dragonis1701]

I have a script where it's supposed to spawn two treasure chests at the top of every hour but for some reason it shells out errors sometimes. Can you tell me what I did wrong?
 

-    script    Chest    -1,{
OnClock0000: goto Spawn;
OnClock0100: goto Spawn;
OnClock0200: goto Spawn;
OnClock0300: goto Spawn;
OnClock0400: goto Spawn;
OnClock0500: goto Spawn;
OnClock0600: goto Spawn;
OnClock0700: goto Spawn;
OnClock0800: goto Spawn;
OnClock0900: goto Spawn;
OnClock1000: goto Spawn;
OnClock1100: goto Spawn;
OnClock1200: goto Spawn;
OnClock1300: goto Spawn;
OnClock1400: goto Spawn;
OnClock1500: goto Spawn;
OnClock1600: goto Spawn;
OnClock1700: goto Spawn;
OnClock1800: goto Spawn;
OnClock1900: goto Spawn;
OnClock2000: goto Spawn;
OnClock2100: goto Spawn;
OnClock2200: goto Spawn;
OnClock2321: goto Spawn;

Spawn:
        setarray .@map$[0],"ama_fild01","ayo_fild01","ayo_fild02","bra_fild01","cmd_fild01","cmd_fild02","cmd_fild03","cmd_fild04","cmd_fild05","cmd_fild06","cmd_fild07","cmd_fild08","cmd_fild09","ein_fild01","ein_fild02","ein_fild03","ein_fild04","ein_fild05","ein_fild06","ein_fild07","ein_fild08","ein_fild09","ein_fild10","dic_fild01","dic_fild02","gef_fild00","gef_fild01","gef_fild02","gef_fild03","gef_fild04","gef_fild05","gef_fild06","gef_fild07","gef_fild08","gef_fild09","gef_fild10","gef_fild11","gef_fild12","gef_fild14","gon_fild01","hu_fild01","hu_fild02","hu_fild03","hu_fild04","hu_fild05","hu_fild06","hu_fild07","lhz_fild01","lhz_fild02","lhz_fild03","lou_fild01","xmas_fild01","man_fild01","man_fild02","man_fild03","moc_fild01","moc_fild02","moc_fild03","moc_fild07","moc_fild11","moc_fild12","moc_fild13","moc_fild16","moc_fild17","moc_fild18","moc_fild20","moc_fild21","moc_fild22","mosk_fild02","mjolnir_01","mjolnir_02","mjolnir_03","mjolnir_04","mjolnir_05","mjolnir_06","mjolnir_07","mjolnir_08","mjolnir_09","mjolnir_10","mjolnir_11","mjolnir_12","nif_fild01","nif_fild02","pay_fild01","pay_fild02","pay_fild03","pay_fild04","pay_fild05","pay_fild06","pay_fild07","pay_fild08","pay_fild09","pay_fild10","pay_fild11","prt_fild00","prt_fild01","prt_fild02","prt_fild03","prt_fild04","prt_fild05","prt_fild06","prt_fild07","prt_fild08","prt_fild09","prt_fild10","prt_fild11","ra_fild01","ra_fild02","ra_fild03","ra_fild04","ra_fild05","ra_fild06","ra_fild07","ra_fild08","ra_fild09","ra_fild10","ra_fild11","ra_fild12","ra_fild13","spl_fild01","spl_fild02","spl_fild03","um_fild01","um_fild02","um_fild03","um_fild04","ve_fild01","ve_fild02","ve_fild03","ve_fild04","ve_fild05","ve_fild07","yuno_fild01","yuno_fild02","yuno_fild03","yuno_fild04","yuno_fild05","yuno_fild06","yuno_fild07","yuno_fild08","yuno_fild09","yuno_fild10","yuno_fild11","yuno_fild12";
        set .@rand1,rand(0,143);
        monster    .@map$[.@rand1],0,0,"Treasure Chest",1732,1;
        sleep2 1000;
        setarray .@map$[0],"ama_fild01","ayo_fild01","ayo_fild02","bra_fild01","cmd_fild01","cmd_fild02","cmd_fild03","cmd_fild04","cmd_fild05","cmd_fild06","cmd_fild07","cmd_fild08","cmd_fild09","ein_fild01","ein_fild02","ein_fild03","ein_fild04","ein_fild05","ein_fild06","ein_fild07","ein_fild08","ein_fild09","ein_fild10","dic_fild01","dic_fild02","gef_fild00","gef_fild01","gef_fild02","gef_fild03","gef_fild04","gef_fild05","gef_fild06","gef_fild07","gef_fild08","gef_fild09","gef_fild10","gef_fild11","gef_fild12","gef_fild14","gon_fild01","hu_fild01","hu_fild02","hu_fild03","hu_fild04","hu_fild05","hu_fild06","hu_fild07","lhz_fild01","lhz_fild02","lhz_fild03","lou_fild01","xmas_fild01","man_fild01","man_fild02","man_fild03","moc_fild01","moc_fild02","moc_fild03","moc_fild07","moc_fild11","moc_fild12","moc_fild13","moc_fild16","moc_fild17","moc_fild18","moc_fild20","moc_fild21","moc_fild22","mosk_fild02","mjolnir_01","mjolnir_02","mjolnir_03","mjolnir_04","mjolnir_05","mjolnir_06","mjolnir_07","mjolnir_08","mjolnir_09","mjolnir_10","mjolnir_11","mjolnir_12","nif_fild01","nif_fild02","pay_fild01","pay_fild02","pay_fild03","pay_fild04","pay_fild05","pay_fild06","pay_fild07","pay_fild08","pay_fild09","pay_fild10","pay_fild11","prt_fild00","prt_fild01","prt_fild02","prt_fild03","prt_fild04","prt_fild05","prt_fild06","prt_fild07","prt_fild08","prt_fild09","prt_fild10","prt_fild11","ra_fild01","ra_fild02","ra_fild03","ra_fild04","ra_fild05","ra_fild06","ra_fild07","ra_fild08","ra_fild09","ra_fild10","ra_fild11","ra_fild12","ra_fild13","spl_fild01","spl_fild02","spl_fild03","um_fild01","um_fild02","um_fild03","um_fild04","ve_fild01","ve_fild02","ve_fild03","ve_fild04","ve_fild05","ve_fild07","yuno_fild01","yuno_fild02","yuno_fild03","yuno_fild04","yuno_fild05","yuno_fild06","yuno_fild07","yuno_fild08","yuno_fild09","yuno_fild10","yuno_fild11","yuno_fild12";
        set .@rand1,rand(0,143);
        monster    .@map$[.@rand1],0,0,"Treasure Chest",1732,1;
        end;
}

The errors that show up, in the map server console, are:

"Warning: script:getelementofarray: index out of range (141)
Debug: Data: variable name = ".@map$" index=0
Debug: Source (NPC): Chest (invisible/not on a map)"

Edited September 4, 2014 by Dragonis1701

[Emistry]

set .@rand1,rand(0,143);

change to

set .@rand1,rand( getarraysize( .@map$ ) );

[Dragonis1701]

Alright, I'll try it and see if it produces any errors. Oddly enough, out of the eight hours the server was up, I only received two errors, on the random rolling 137 and 141. Not sure as to why.

It hasn't given me an error all day. Thank you, Emistry.

Edited September 4, 2014 by Dragonis1701