anchor.diff:  	Subscriber = "deleteandroid",
   	Password = ocs:generate_password(),
   	ok = ocs:add_subscriber(Subscriber, Password, Attribute),
  -	{ok, _BinPassword, _Attribute, _Balance} = ocs:find_subscriber(Subscriber),
  +	{ok, _BinPassword, _Attribute, _Balance, _Enabled} = ocs:find_subscriber(Subscriber),
   	ok = ocs:delete_subscriber(Subscriber),
   	{error, _} = ocs:find_subscriber(Subscriber).
   
  
positive.code: 	Password2 = ocs:generate_password(),
  	ok = ocs:add_subscriber("tomba", Password1, Attribute1),
  	ok = ocs:add_subscriber("android", Password2, Attribute2),
  	{ok, BinPassword1, Attribute1, _Balance} = ocs:find_subscriber("tomba"),
  	Password1 = binary_to_list(BinPassword1),
  	{ok, BinPassword2, Attribute2, _Balance} = ocs:find_subscriber("android"),
  	Password2 = binary_to_list(BinPassword2).
  
  delete_subscriber() ->
  
negative.code: 	Subscriber = "android",
  	OldPassword = ocs:generate_password(),
  	ok = ocs:add_subscriber(Subscriber, OldPassword, Attribute),
  	{ok, BinOldPassword, Attribute, _Balance, _Enabled} = ocs:find_subscriber(Subscriber),
  	OldPassword = binary_to_list(BinOldPassword),
  	NewPassword = ocs:generate_password(),
  	ok = ocs:update_password(Subscriber, OldPassword, NewPassword),
  	{ok, BinNewPassword, _BinAttribute, _Balance, _Enabled} = ocs:find_subscriber(Subscriber),
  	NewPassword = binary_to_list(BinNewPassword).
  
  update_attributes() ->
  