# Alert Notification

**URL:** <https://community.graylog.org/t/alert-notification/11954>\
**Category:** Graylog Central (peer support)\
**Tags:** pipeline-rules, route-to-streampl\
**Created:** [September 13, 2019, 3:06am UTC](https://community.graylog.org/t/alert-notification/11954 "2019-09-13T03:06:39Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![gsmith](https://sea2.discourse-cdn.com/flex016/user_avatar/community.graylog.org/gsmith/32/1222_2.png) [@gsmith](https://community.graylog.org/u/gsmith)\
**Post date:** [September 14, 2019, 2:31am UTC](https://community.graylog.org/t/alert-notification/11954/2 "2019-09-14T02:31:31Z")

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Think I may have found my answer here;

> [@How can I drop message between timestamp hour through pipeline?](https://community.graylog.org/t/how-can-i-drop-message-between-timestamp-hour-through-pipeline/8843/5):
>
> I tried something like I saw here: rule “Pipeline on Timing” when to\_long(to\_date($message.timestamp).hourOfDay) \>= 0 && to\_long(to\_date($message.timestamp).hourOfDay) \<= 2 then set\_field(“Pipeline\_Triggered\_Condition”, true); end But when I try to filter in search, it returns nothing. Application: OurApp AND source: customer AND Pipeline\_Triggered\_Condition: true; False returns nothing too.

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_[View the full topic](https://community.graylog.org/t/alert-notification/11954)._