[Spell] Removing teleportation animation

[Sieben]

Greetings!

I have created a portal-like building, and I would like to know if there's a way to remove that teleport animation when a unit uses it? I'd like the unit to go through the portal without flashy animation (both at start point and destination point), which doesn't fit with my building.
I was thinking of importing a dummy model and setting its path to the teleport animation spell (Abilities\Spells\Human\MassTeleport\MassTeleportCaster.mdl or Abilities\Spells\Human\MassTeleport\MassTeleportTarget.mdl), but unsuccessfuly. Any idea? Thanks!