Thank you Adam! that’s it!
But now i have another question. And if i want to bake the hair geometry to a point cache tag?
i know i can cache the animation in the cache tab of the hair object but that is not what i want
i want to bake it to a point cache tag to have the ability to control the strenght and the duration of the animation (to speed and to slow down)
or maybe if i want to export the resulting mesh to another 3d software…
thank you