Problem mit Questlib

quest drop begin 
    state start begin 
        function ab() 
            local ju = { 
                --mob-id--min-level--max-level---item-anzahl---prozent---item-id-s----prozentuale--veränderung--pro--level 
				
				{172,     1,         8,             1,        5,    30070,        0.1},
} 
            return ju 
        end 
        when kill with not npc.is_pc() begin 
            local boni,lck,per,luck,bsp = 0,0,0,0,drop.ab() 
            for i = 1, table.getn(bsp)+1, 1 do 
                if npc.get_race() == bsp[i][1] then 
                    if pc.get_level() >= bsp[i][2] and pc.get_level() <= bsp[i][3] then 
                        boni = (bsp[i][2] - pc.get_level()) * (-1) 
                        boni = boni * bsp[i][bsp[i][4]*2+5] 
                        luck = number(1,bsp[i][4]) 
                        luck = luck + 4 + bsp[i][4] 
                        lck = luck - bsp[i][4] 
                        per = 100 - bsp[i][lck] + boni 
                        lck = number(1,100) 
                        if lck > per then 
                            pc.give_item2(bsp[i][luck], 1) 
                        end 
                    end 
                end 
            end 
        end 
    end 
end