Problem when applying animations to cars

[Sabudum]

So, i've been trying to make my own custom Cutscenes, and i did successfully with peds, objects, weapons, but i can't seem to figure out the vehicles, When i launch KAM's max scripts ifp-io plugin, it simply won't apply the animation to the vehicles, even those from the original game, i tried exporting every cutscene ifp, and applying the vehicles animations to their own vehicles/objects exported dff's, but the script doesn't seem to do anything with vehicles, any idea why, or how to overcome this issue?

[privoxy]

So maybe try to make your own IFP, maybe that`s help. That`s my sugestion.

[Sabudum]

But how can i make my own ifp, if i can't know how the game's ifps work, i would like to apply a vehicle animation to some vehicle to study how it is made.