[flyable] doesn't work in draenor map?

[devilArt]

this is my mount macro, but it still use fly mount in draenor map, any solution?

/run VehicleExit()
/script ToggleSheath();
/use [combat]Soulshatter
/use [nomounted,flyable]Bloodbathed Frostbrood Vanquisher
/use [nomounted]Vicious War Wolf
/dismount