PvP for Assassins, LK Jobs only

[Pandaaa]

heres the script but dont know how to use the if (class ==  things to make it work

warcraft,199,186,5	script	Unknown Thief	4_F_JOB_ASSASSIN,{
if(agitcheck() || agitcheck2()){
mes "[ Unknown Thief ]";
mes "Sorry, You cannot Enter during ^00CC00War of Emperium^000000";
mes "Come back later, Thank You";
close;
}
else{
if(Class == Job_Assassin){
mes "[ Unknown Thief ]";
mes "You must be a ^00CC00Assassin Cross^000000 to enter this arena.";
mes "Which one you wanna enter?";
next;
menu "Legggoo! ["+getmapusers("guild_vs3")+"]:",rass;

rass:
announce "[ Unknown Thief ] "+strcharinfo(0)+" has entered in SinX Battle Arena!!",0,0x00CC99;
warp "guild_vs3",0,0;
end;

} else {
mes "[ Unknown Thief ]";
mes "Sorry, You cannot Enter the arena";
mes "You must be an assassin to enter this arena, Thank You";
close;
}

OnInit:
	waitingroom "Battle Arena",0;
	end;

}
}
guild_vs3	mapflag	pvp
guild_vs3	mapflag	nowarp
guild_vs3	mapflag	nowarpto
guild_vs3	mapflag	noreturn
guild_vs3	mapflag	nosave
guild_vs3	mapflag	pvp_noguild
guild_vs3	mapflag	pvp_noparty
guild_vs3	mapflag	nobranch
guild_vs3	mapflag	noicewall

 

[Guest]

This line says: Assassins or Knights are allowed. 

if(Class == Job_Assassin || Class == Job_Knight){