anchor.diff:  	ok = ocs_gtt:delete(Table, Prefix),
   	receive
   		{delete_gtt, {Table, #gtt{num = Prefix, value = Value2}}, resource} ->
  -		{Description, Amount, _} = Value2
  +			{Description, Amount, _} = Value2
   	end.
   
   add_pla_event() ->
  
positive.code: 	{ok, #gtt{}} = ocs_gtt:insert(Table, Prefix, {Description, Amount}),
  	receive
  		{insert_gtt, {Table, #gtt{num = Prefix, value = Value}}, resource} ->
  		{Description, Amount, _} = Value
  	end.
  
  gtt_delete_event() ->
  
negative.code: 	{ok, #pla{}} = ocs:add_pla(Pla),
  	receive
  		{create_pla, #pla{name = Name, status = Status}, resource} ->
  			Table = list_to_existing_atom(Name)
  	end.
  
  delete_pla_event() ->
  