How to edit number with different steps in menu?

I tried this code to edit same number with steps of 10, 1 or 0.1 but when I edit number e.g. in "number x10" menu, that value it not updated to other menus. How can I fix this?

var number = 50.0;

var menu = {
  "" : { "title" : "-- Menu --" },

  "number x10" : {
    value : number,
    format: v => v.toFixed(1),
    step: 10,
    onchange : v => { number=v; }
  },

  "number x1" : {
    value : number,
    format: v => v.toFixed(1),
    step: 1,
    onchange : v => { number=v; }
  },

  "number x0.1" : {
    value : number,
    format: v => v.toFixed(1),
    step: 0.1,
    onchange : v => { number=v; }
  },

  "Exit" : function() { E.showMenu(); },
};

E.showMenu(menu);