# this code is to change the contact name
 def changenamedata
   oldName =  $addressfiles_directory + "/" + @a_viewnamedata +  ".nam"
   if ! @a_changenamedata.empty? 
    
     newName =  $addressfiles_directory + "/" + @a_changenamedata + ".nam"
     File.rename(oldName, newName)
     oldphotoName =  $addressfiles_directory + "/" + @a_viewnamedata + ".jpg"
     newphotoName =  $addressfiles_directory + "/" + @a_changenamedata + ".jpg"
     if  File.exist?(oldphotoName)
       File.rename(oldphotoName, newphotoName)
     end
   end    
  end