Disable flying mount in certain zone

[Maze]

Hey guys,
I'm going to release a Custom Stairs Event and I would like to disable the ability to use the flying mount in certain zone (876 - GmIsland).
I made some attempt:

The 1st was adding a spell for certain area like here:

REPLACE INTO `spell_area` (`spell`, `area`, `quest_start`, `quest_start_active`, `quest_end`, `aura_spell`, `racemask`, `gender`, `autocast`, `quest_start_status`, `quest_end_status`) VALUES (91124, 876, 0, 0, 0, 0, 0, 2, 1, 64, 11);

https://www.wowhead.com/spell=91124/disable-flying-mounts This spell disable only some type of flying mount, unfortunately not the most common ones.

The 2nd attempt was to add a new row in "disables", I was trying to disable this spell https://www.wowhead.com/spell=90267/flight-masters-license in Gm Island area.

INSERT INTO `disables` (`sourceType`, `entry`, `flags`, `params_0`, `params_1`, `comment`) VALUES (0, 90267, 32, '1', '876', 'gmislandfly');

I also tried with other flags but without success. It doesn't affect any spell in game.

Could someone explain me how to disable flying mount in certain zone like here?

Thanks in advance

 

[ExO]

Ugh, been years since I have done this, so I don't recall. Will try to reflect a little on it