try this
prontera,155,181,5 script Sample 757,{
if( 3rdJobItems ){
mes "You have gained the Item before.";
}else{
switch( BaseJob ){
Case Job_Knight: set .ItemID,7539; break;
Case Job_Priest: set .ItemID,7539; break;
Case Job_Wizard: set .ItemID,7539; break;
Case Job_Blacksmith: set .ItemID,7539; break;
Case Job_Hunter: set .ItemID,7539; break;
Case Job_Assassin: set .ItemID,7539; break;
Case Job_Crusader: set .ItemID,7539; break;
Case Job_Monk: set .ItemID,7539; break;
Case Job_Sage: set .ItemID,7539; break;
Case Job_Rogue: set .ItemID,7539; break;
Case Job_Alchemist: set .ItemID,7539; break;
Case Job_Bard: set .ItemID,7539; break;
Case Job_Dancer: set .ItemID,7539; break;
default:
mes "Nothing you can take..";
close;
}
getitem .ItemID,1;
mes "You have gained 1 "+getitemname( .ItemID )+".";
set 3rdJobItems,1;
}
close;
}