void main()
{
    object oSwitch = GetObjectByTag("a4_leverswitch");

    if(GetLocalInt(oSwitch, "a4leverused") != 1)
        {
            PlayAnimation(ANIMATION_PLACEABLE_ACTIVATE);
            SetLocalInt(oSwitch, "a4leverused", 1);
        }
      else
        {
            PlayAnimation(ANIMATION_PLACEABLE_ACTIVATE);
            SetLocalInt(oSwitch, "a4leverused", 0);
        }
}