static list with problem.

[sharath karnati]

Hi All,
 
   I need to populate static list of values in <s:select> tag in struts2. 
 
<s:select key="caller_id" onchange="javascript:callerid(this.value);"
list="#{'O':'Select','Y':'Yes','N':'No','C':'Don't have caller ID'}" />
 
      How to add single quote in (Don't have caller ID) value in static list.
 
Thanks,
Sharath.