Issue with bigtable mutateRow() call to update row. The update operation is not working as expected without any errors

Question

I am trying to update an existing row with key "2023-09-25" in my bigtable table. The mutateRow() call succeeds, but I don't see update happening. The row key "2023-09-25" still holds previous value even after the below call. Note, I am able to add a new row using below code,but not able to update. Can anyone help? thanks

 try{
  val rowMutation = RowMutation.create("my_table_123", "2023-09-25").setCell("info", "table_name", "b_sad_201")
  println(bigtableClient.mutateRow(rowMutation))
}
catch {
  case e: Exception => {
      e.printStackTrace()
    false
  }
}

I am trying this in a scala app