How to I get ui vision to type 9 random characters with xtype

I’m trying to have the macro insert 9 random characters with q mix of a-z & 1-9 example: 83bd05hr4 as I have next to no coding knowledge how can I insert this command?

This is the solution un array you can add prefered characters.

Remember to change 25 with total amount of characters added in arrey

{
  "Name": "Random_String_With_Array_Customizable",
  "CreationDate": "2020-2-23",
  "Commands": [
    {
      "Command": "executeScript_Sandbox",
      "Target": "var letters = ['a','b','c','d','e','f','g','h','i','j','k','l', 'm','n','o','p','q','r','s','t','u','w','x','y','z'];  var string = '';  for(var i = 0; i < 9; i++){string += letters[parseInt(Math.random() * 25)]}; return string;",
      "Value": "v1"
    },
    {
      "Command": "echo",
      "Target": "Random Value Is ${v1}",
      "Value": "#shownotification"
    }
  ]
}