Random NLA actions

Hi everybody !
I want to make a script for my character to randomly blink his eyes. So I’m playing whit the NLA and Python.
I’m using SetActive(Objet) method in Blender.Amature.NLA, but it don’t work like I want. I want to randomly fill the NLA, launching my blink.

Any idea ?

Thank you a lot !

It’s for an animation, or a realtime using the gamengine?
for myselft I would just link the eye’s bone which blink to an action constratin and anim it manually. With ctrl-click it’s not that long to do.

It’s for an animation, not a game.
I have several characters, a scripted way will save me a lot of time.
Thanx for your reply !