FarPoint.Win.Spread.CellType.MaskCellType mask =new FarPoint.Win.Spread.CellType.MaskCellType();
        string[] test;
        test = new string[] {"t", "e", "s", "t"};
        mask.CustomMaskCharacters = test;
        //  0 is the first character in the array, 1 is the second character, etc...
        mask.Mask = "0120";
        fpSpread1.Sheets[0].Cells[0, 0].CellType = mask;
	 
	
		Dim test As String()
        test = New String() {"t", "e", "s", "t"}
        Dim mask As New FarPoint.Win.Spread.CellType.MaskCellType()
        mask.CustomMaskCharacters = test
        '  0 is the first character in the array, 1 is the second character, etc...
        mask.Mask = "0120"
        FpSpread1.Sheets(0).Cells(0, 0).CellType = mask