window.onload = function()
{
   var spread = new GC.Spread.Sheets.Workbook(document.getElementById("ss"),{sheetCount:3});
   var activeSheet = spread.getActiveSheet();

  // Unlock the entire column 1.
  activeSheet.getRange(-1, 2, -1, 1, GC.Spread.Sheets.SheetArea.viewport).locked(false);

  // Unlock cell(1,3).
  activeSheet.getCell(1, 3, GC.Spread.Sheets.SheetArea.viewport).locked(false);
  activeSheet.getCell(1, 3, GC.Spread.Sheets.SheetArea.viewport).value("unlocked");

  // Protect the sheet, then cells can only be edited when they are unlocked.
  activeSheet.options.isProtected = true;
}