send automated data from Gsheet to Google chat space using appscript

I have a specific range in google sheet to be send on daily basis to a google chat space, here i want an appscript function that can pull out the range and send it to the chat space.

function myFunction() {

  var ss = SpreadsheetApp.getActiveSpreadsheet()
  var sheet = ss.getSheetByName('test')
  var sa = sheet.getRange(1,1,3,4).getValues()

  var Webhooklink = "https://chat.googleapis.com/v1/spaces/z9qlr4AAAAE/messages?key=AIzaSyDdI0hCZtE6vySjMm-WEfRq3CPzqKqqsHI&token=Hb_1EL9SStKXYJXjU_hFaKX7lQo_vVTccW_8qCOSNOk%3D"


  //var message = { text: "Hello"};
  var payload = JSON.stringify(sa);
  var options = {
          method: 'POST',
          contentType: 'application/json',
          payload: payload
    };
  
  var response =  UrlFetchApp.fetch(Webhooklink, options );

  Logger.log(response)

} ```