R>Monster Invasion

[Scotch]

Sir How to make it Random Boss monster on this script?

 

Thanks in Advance

//=========== Town Invasion ==========
//=========== Version: 1.0 ===========

-	script	towninvasion	-1,{
OnClock0800:
OnClock1400:
OnClock2000:
OnClock0200:
set .town,rand(11);
setarray  $@mapinvasion$[0],"morocc","geffen","payon","alberta","izlude","aldebaran","xmas","comodo","yuno","amatsu","gonryun","louyang";

announce "A Boss is destroying our city! Help us!",bc_all,0x00FFFF;
sleep2 2000;
announce "Hurry before it dominate the whole "+$@mapinvasion$[.town]+"!",bc_all,0x00FFFF;
sleep2 5000;
announce "This monster is quite elusive! So please beat it up!",bc_all,0x00FFFF;
monster $@mapinvasion$[.town],0,0,"Bring it on!",1502,1,"towninvasion::OnInvadeKill";
end;

OnInvadeKill:
announce "Good job, for keeping our city safe!!",bc_all,0x00FFFF;
getitem 7539,1;
end;

OnInit:
setarray  $@mapinvasion$[0],"morocc","geffen","payon","alberta","izlude","aldebaran","xmas","comodo","yuno","amatsu","gonryun","louyang";
end;

}