# this code is to change the note name
 def changehypernotedata
  if ! @a_changehypernotedata.empty? 
   if ! @a_viewhypernote.empty? 
   oldName =  @a_viewhypernote + ".txt"
  
    
     newName =  @a_changehypernotedata + ".txt"
      if  File.exist?(oldName)
         File.rename(oldName, newName)
         oldlinkName =  @a_viewhypernote + ".lnk"
         newlinkName =  @a_changehypernotedata + ".lnk"
         if  File.exist?(oldlinkName)
            File.rename(oldlinkName,  newlinkName)
         end
     end
     end
   end    
  end