lift(Evalator) in Scripting

I took the script from this guide https://www.ugx-mods.com/forum/scripting/11/lift-problem/8861/msg96911#msg96911

but I wanted to add that the sounds of lifting and lowering the elevator would occur, also that it would be possible to buy lifting and lowering the elevator, how do I do this?
that is, add the price of the elevator, and the sounds when lifting and lowering the elevator

Code Snippet

Plaintext

lift()
{
    trig = getEntArray("trigger", "targetname");
 
    for (i=0;i<trig.size;i++)
    {
        trig[i] thread trigs_think();
    }
 
    //false == down, true == up
    level.lift_is = false;
    level.lift_moving = false;
}
 
trigs_think()
{
    lift = getEnt("lift", "targetname");
 
    self SetCursorHint( "HINT_NOICON" );
    self UseTriggerRequireLookAt();
    self setHintString("Press ^3[&&1] ^7to move lift");
 
    for (;;)
    {
        self waittill("trigger");
 
        if (level.lift_is == false && level.lift_moving == false)
        {
            level.lift_moving = true;
            lift MoveZ (128, 4);
            level.lift_is = true;
            wait 5;
            level.lift_moving = false;
        }
 
        else if (level.lift_is == true && level.lift_moving == false)
        {
            level.lift_moving = true;
            lift MoveZ (-128, 4);
            level.lift_is = false;
            wait 5;
            level.lift_moving = false;
        }
        wait 0.5;
    }
}

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lift(Evalator)