Android (Java/Kotlin) Google Sheets API: Update Cell Value

val service = ...val spreadsheetId = ...val sheetName = 'Sheet1'val rows = listOf<ValueRange>(    ValueRange()        .setRange("'$sheetName'!A1")        .setValues(listOf(            listOf<Any>("Update A1")        )),    ValueRange()        .setRange("'$sheetName'!B2")        .setValues(listOf(            listOf<Any>("Updaate B2")        )))val body = BatchUpdateValuesRequest()    .setValueInputOption("RAW")    .setData(rows)val result = service.spreadsheets().values().batchUpdate(spreadsheetId, body).execute()Timber.d("updatedRows=${result.totalUpdatedRows}")

class SheetHelper {    companion object {        // 0 - A        // 1 - B        fun toChar(index: Int): Char {            return (index + 65).toChar()        }    }}val sheetName = 'Sheet1'val rows = mutableListOf<ValueRange>()fun setCellValue(row: Int, col: Int, value: Any) {    rows.add(        ValueRange()            .setRange("'$sheetName'!${SheetHelper.toChar(col)}$row")            .setValues(mutableListOf(                listOf<Any>(value)            ))    )}