How to increase the value of variable inside While?

UI.Vision RPA HowTo
1

Hello. I use while for repeating actoins and csvreadarray. ${a1[${i1}][0]} - something like this. I need to increase var i1 + 1 after every cycle

2 
{
  "Name": "3",
  "CreationDate": "2022-11-1",
  "Commands": [
    {
      "Command": "csvReadArray",
      "Target": "fb-yag.csv",
      "Value": "a1",
      "Description": ""
    },
    {
      "Command": "store",
      "Target": "0",
      "Value": "i1",
      "Description": ""
    },
    {
      "Command": "while_v2",
      "Target": "${i1} <= 500",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "csvRead",
      "Target": "links.csv",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "open",
      "Target": "${!COL1}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "comment",
      "Target": "store // 0",
      "Value": "i1",
      "Description": ""
    },
    {
      "Command": "verifyElementPresent",
      "Target": "//*[text()[contains(.,'Продать')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "if_v2",
      "Target": "${!STATUSOK} == true",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Продать')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Товар на продажу')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "comment",
      "Target": "click // //*[text()[contains(.,'Добавить фото')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XClick",
      "Target": "0dipqh_dpi_96.png",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${a1[${i1}][0]}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${KEY_ENTER}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Название')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${a1[${i1}][1]}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Цена')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "35",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Состояние')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Новый товар')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Описание')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${a1[${i1}][1]} etri 30 AZN \"  Hədiyyə probniki siyahidan seçin Whatsappa yazın: https://wa.me/994552001242\"",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Далее')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${KEY_END}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XClick",
      "Target": "iom6s5_dpi_96.png",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${KEY_ESC}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${KEY_ESC}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "comment",
      "Target": "click // //*[text()[contains(.,'Отправить')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "else",
      "Target": "",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Напишите что-нибудь...')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "comment",
      "Target": "click // //*[text()[contains(.,'Создайте общедоступную публикацию...')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XClick",
      "Target": "6drd3x_dpi_96.png",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${a1[${i1}][1]} etri 30 AZN \"  Hədiyyə probniki siyahidan seçin Whatsappa yazın: https://wa.me/994552001242\"",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XClick",
      "Target": "otxpsy_dpi_96.png",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${a1[${i1}][0]}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${KEY_ENTER}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'Отправить')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${KEY_ESC}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "XType",
      "Target": "${KEY_ESC}",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "store",
      "Target": "${i1}",
      "Value": "${i1}=${i1}+1",
      "Description": ""
    },
    {
      "Command": "comment",
      "Target": "repeatIf // ",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "end",
      "Target": "",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "waitForPageToLoad",
      "Target": "",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "click",
      "Target": "//*[text()[contains(.,'1 мин.')]]",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "store",
      "Target": "${!URL}",
      "Value": "!csvLine",
      "Description": ""
    },
    {
      "Command": "csvSave",
      "Target": "urls.csv",
      "Value": "",
      "Description": ""
    },
    {
      "Command": "end",
      "Target": "",
      "Value": "",
      "Description": ""
    }
  ]
}
3 
{
      "Command": "executeScript_Sandbox",
      "Target": "return Number(${i1}) + 1;",
      "Value": "i1",
      "Description": ""
    }
4

thank you, it worked