set jobchange_level_3rd is not working

[Emad]

i added 3rd skills on 2nd classes and want to make 3rd skill unlocked after all 2nd class points are full but set jobchange_level_3rd,70; is not working

callfunc "F_GetPlatinumSkills";
    jobchange Job_Lord_Knight;
    set .@eac,  eaclass();
    if(.@eac&EAJL_2)
            set jobchange_level_3rd,70;
    Resetskill;
    mes "[Platinum Skill NPC]";
    mes "There you go!";
    close;
}