CellsArray = New Array;
  CellsArray.Add("B2");
  CellsArray.Add("A3");
  CellsArray.Add("B4");
  
  Spreadsheet = "1Pu07Y5UiGVfW4fqfP7tcSQtdSX_2wdm2Ih23zlxJJwc";
  Sheet = "Sheet2";
  
  Response = OPI_GoogleSheets.GetCellValues(Token, Spreadsheet, CellsArray, Sheet); //Map
  Response = OPI_Tools.JSONString(Response); //JSON string