function hideRows()
{
    var dataI = sheet.getRange('I2:I').getValues();
    var dataN = sheet.getRange('N2:N').getValues();
    var count = getLastPopulatedRow();
    var array = new Array(count);
    var arrayCount = 0;
    var startingRow = 0;

    for (var i=startingRow; i<count; i++)
    {
        if ((dataI[i][0] == "Completed") || (dataI[i][0] == "Duplicate") || (dataI[i][0] == "Refunded") || (dataI[i][0] == "Was Already Fulfilled") || (dataI[i][0] == "Cancelled")) {
          array[arrayCount] = i+2;
          arrayCount++;
        }
    }

    for (var i = 0; i < arrayCount; i++)
    {
      sheet.hideRows(array[i]);
    }
}