SMS sending and Clear Google Sheet data MIT Inventor

I am trying to build an SMS sending App using Google Sheets and App script. What I want is to create the login for the App user, a CRUD for contact data and type in the message to be sent. The concept into Google sheet is of,
Login and validation
Message entry for the SMS
Contact Entry
and I want to clear a particular column data, which I am able to do using App Script,

function clearTheMessage() {
  var sheet = SpreadsheetApp.openByUrl(SHEET_URL).getSheetByName(SHEET_NAME);
  var data = sheet.getDataRange().getDisplayValues();
  var range = [];
      data.forEach(function(e, i){
    if (e[0] == "SMS Sent") range.push("E" + (i + 1));

I have started with the SMS Sending with Google sheet, tried to combine the CRUD, got stuck.
In MIT Inventor I want help to create the blocks for the refresh button to execute the clearContent function.
And also update the name and number record.

Show how this function is connected to your web app script?

Kindly Look into the attachments and suggest the development. Thank you.
CRUD Immi SMS - CRUDIII.csv (104 Bytes) CRUD.txt (4.0 KB) CRUDImmiSMS.aia (14.8 KB)