I used other var names though, but this should work. function splitColumn() { var ss = SpreadsheetApp.getActiveSpreadsheet(); var commaSheet = ss.getSheetByName('Sheet15'); var dotSheet = ss.getSheetByName('Sheet14'); var lastRowComma = commaSheet.getLastRow(); var commaRange = commaSheet.getRange('A1:A' + lastRowComma); commaRange.splitTextToColumns(','); var lastRowDot = dotSheet.getLastRow(); var dotRange = dotSheet.getRange('A1:A' + lastRowDot); dotRange.splitTextToColumns(':'); } // function