sharepoint 2013 autohosted remote event receiver does not work

Hello i have a problem with remote event receiver.

It should listen to action(in this particular case- adding to list) and then perform another action(in this case - add an item to another list)

The code which adds item to 'another list' works well . it is adding item to my announcements list.

but i try the same in event receiver. and nothing happens- item is not added.this is code- http://wklejto.pl/153506

Any ideas why?

or could you tell another way to check if remote event receiver is working properly?

best regards