Thanks, HateR_Kint
. You're right ! I used a trigger and it worked !
Example : unit : civilian, name : Civ1. Linked (F2) with a trigger: on Activation : Civ1 switchMove "OnChair"
Note : as you said, it works fine with ChairX ; but it might be working with other chair types, because seems the animation works even without a chair (lol). Perhaps with some trick like getPost (ajust the chair's height...).
Anyway, topic is SOLVED ! Thanks again :thumbsup: !