void main()
{
    int nUser = GetUserDefinedEventNumber();

    if(nUser == 400)
    {
    SetLocalInt(OBJECT_SELF, "tri_crsActive", 1);
    ActionPlayAnimation(ANIMATION_PLACEABLE_ACTIVATE);
    }
        if(nUser == 401)
    {
    SetLocalInt(OBJECT_SELF, "tri_crsActive", 0);
    ActionPlayAnimation(ANIMATION_PLACEABLE_DEACTIVATE);
    }
}