# Chapter 4 - Alert OnNext subscription

**URL:** <https://forums.kodeco.com/t/chapter-4-alert-onnext-subscription/28453>\
**Category:** RxSwift\
**Created:** [April 16, 2017, 3:03pm UTC](https://forums.kodeco.com/t/chapter-4-alert-onnext-subscription/28453 "2017-04-16T15:03:45Z")\
**Posts on this page:** 1\
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**Author:** ![seantanly](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/seantanly/32/62912_2.png) [@seantanly](https://forums.kodeco.com/u/seantanly)\
**Post date:** [April 18, 2017, 6:27am UTC](https://forums.kodeco.com/t/chapter-4-alert-onnext-subscription/28453/2 "2017-04-18T06:27:23Z")

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About the onNext, there’s an error in the text and this is mentioned in the RxSwift v1.0 Errata thread, which you can find here 🙂

> [@RxSwift v1.0 Errata](https://forums.kodeco.com/t/rxswift-v1-0-errata/27818/21):
>
> I see the Chapter 4, challenge source code solution is subscribing for onNext which should rightfully be for onCompleted, which is missing.

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