List scrollbar width

Questions
1

Just a quick question. In a ZIM list you can change the width of the vertical scrollbar with the code like below, but isn't it possible to do it directly in the construction of the list? Now I need 3 lines.

    const keuze = new List({list: users,width: 1000,height:400,viewNum:4,backgroundColor:"#ffffff",color:"#000",selectedBackgroundColor:"#88f",rollBackgroundColor:"#88f",selectedRollBackgroundColor: "#88f",scrollBarColor:"#2f6f8f",scrollBarAlpha:0.9,index: -1,}).addTo(userChoiceScreen).pos(460, 350);
    keuze.scrollBar.size = 40;
    keuze.update();