Update Function not working in Google Sheet

[Rianti_Siti_Machmuda]

So I made a feature to update data that previously submitted. This is to help user if they had mistake in submit the data. Unfortunately the update function doesn’t work. I use google sheet as database. These are my blocks:

And here’s my app script code:

function doPost(e) {
  return ceksheet(e);
}

function doGet(e) {
  return ceksheet(e);
}

function ceksheet(e){
  var ss = SpreadsheetApp.getActive();
  var sh = ss.getSheetByName(e.parameter.SH); 
  
  //CREATE
  if (e.parameter.func == "Create") {
    var ts = e.parameter.TIMESTAMP;
    var kegiatan = e.parameter.KEGIATAN;
    var namasiswa = e.parameter.NAMASISWA;
    var kelas = e.parameter.KELAS;
    var bacaan = e.parameter.BACAAN;
    var ayat = e.parameter.AYAT;
    var bulan = e.parameter.BULAN;

      var rowData = ([ts,kegiatan,namasiswa,kelas,bacaan,ayat,bulan]); 
      sh.appendRow(rowData); 
  }  
  
    //Read
   if (e.parameter.func == "Read") {
    var rg=sh.getDataRange().getValues();
     var data="";
     for(var row=1;row<rg.length;++row){
       data +=rg[row].join(',')+'\n';
     }
    return ContentService.createTextOutput(data).setMimeType(ContentService.MimeType.TEXT);
  }
   //Update
    if (e.parameter.func == "Update") {
    var ts = e.parameter.TIMESTAMP;
    var kegiatan = e.parameter.KEGIATAN;
    var namasiswa = e.parameter.NAMASISWA;
    var kelas = e.parameter.KELAS;
    var bacaan = e.parameter.BACAAN;
    var ayat = e.parameter.AYAT;
    var bulan = e.parameter.BULAN;
    var lr= sh.getLastRow();
    for(var i=1;i<=lr;i++){
      var data_ts = sh.getRange(i, 1).getValue();
      if(data_ts==ts){
       sh.getRange(i, 2).setValue(kegiatan);
       sh.getRange(i, 3).setValue(namasiswa);
       sh.getRange(i, 4).setValue(kelas);
       sh.getRange(i, 5).setValue(bacaan);
       sh.getRange(i, 6).setValue(ayat);
       sh.getRange(i, 7).setValue(bulan);       
        return ContentService.createTextOutput("Data berhasil di Update").setMimeType(ContentService.MimeType.TEXT);
        
      } 
    }
  } 
}

I use data in column A which is a timestamp as unique data to match the data I want to change.
I thought that this function didn’t work because the format in column A was a time formatted column while the data type used as a matcher was a string. But when I replace the column A format with text, the function still doesn’t work.

Here’s screenshot of my data:

Here’s video of me trying to change the second to last row data in column F (from 30 to 32) and column G (from index of Juni (6) to Mei (5)):

WhatsApp Video 2024-05-12 at 8.57.31 AM.mp4 - Google Drive

Thank you in advance