unwanted symbol spreadsheet-excel (0.3.5.1) gem

Hi,

      I am using the ruby version 1.8.while i export the excel sheet i found different symbol (company’s) instead of company's,i am using the gem spreadsheet-excel (0.3.5.1).I tried and found one solution

format4 = workbook.add_format(:color=>"black",:bold=>1,:underline=>0,:align=>'left',:size=>10,:border=>5,:font_charset=>0x01), but these :font_charset is not removing the symbol(’) FONT_ENCODINGS =     {       0x00 => :iso_latin1,       0x01 => :default,       0x02 => :symbol,       0x4d => :apple_roman,       0x80 => :shift_jis,       0x81 => :korean_hangul,       0x82 => :korean_johab,       0x86 => :chinese_simplified,       0x88 => :chinese_traditional,       0xa1 => :greek,       0xa2 => :turkish,       0xa3 => :vietnamese,       0xb1 => :hebrew,       0xb2 => :arabic,       0xba => :baltic,       0xcc => :cyrillic,       0xde => :thai,       0xee => :iso_latin2,       0xff => :oem_latin1,     } i tried all these but not working ,please reply me

Thanks selvaraj