This example hides the cell's formula when the current sheet is not modifiable.
spreadsheet.getActiveSheet().cells(1,1).setValue(10); spreadsheet.getActiveSheet().cells(1,2).setValue(20); spreadsheet.getActiveSheet().cells(1,3).setFormula("=A1+B1"); spreadsheet.getActiveSheet().cells(1,3).setFormulaHidden (true); spreadsheet.getActiveSheet().protect("1234");
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