Spider web working like ankle snare

[kifu21]

Need help on this one

It seems its not working 

        case UNT_ANKLESNARE:
        case UNT_MANHOLE:
        case UNT_SPIDERWEB:
            if( sg->val2 == 0 && tsc && (sg->unit_id == UNT_ANKLESNARE || bl->id != sg->src_id) ) {
                int sec = skill->get_time2(sg->skill_id,sg->skill_lv);
                if( status->change_start(ss,bl,type,10000,sg->skill_lv,sg->group_id,0,0,sec, SCFLAG_FIXEDRATE) ) {
                    const struct TimerData* td = tsc->data[type]?timer->get(tsc->data[type]->timer):NULL;
                    if( td )
                        sec = DIFF_TICK32(td->tick, tick);
                    if( sg->unit_id == UNT_MANHOLE || battle_config.skill_trap_type || !map_flag_gvg2(src->bl.m) ) {
                        unit->movepos(bl, src->bl.x, src->bl.y, 0, 0);
                        clif->fixpos(bl);
                    }
                    sg->val2 = bl->id;
                } else
                    sec = 3000; //Couldn't trap it?
                if( sg->unit_id == UNT_ANKLESNARE ) {
                    clif->skillunit_update(&src->bl);
                    /**
                     * If you're snared from a trap that was invisible this makes the trap be
                     * visible again -- being you stepped on it (w/o this the trap remains invisible and you go "WTF WHY I CANT MOVE")
                     * bugreport:3961
                     **/
                    clif->changetraplook(&src->bl, UNT_ANKLESNARE);
                }
                sg->limit = DIFF_TICK32(tick,sg->tick)+sec;
                sg->interval = -1;
                src->range = 0;
            }
            break;