> For the complete documentation index, see [llms.txt](https://doc.moost.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.moost.io/platform-manual/rules/rule-configurator/streak-1.md).

# Goal-Achieved Condition

A rule can contain a "Goal-achieved condition". When this feature is enabled, then you can specify a condition so that you are able to measure the success when delivering a notification.

<figure><img src="https://2791588365-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fkz3AVy8mukfhOsBy0Lvo%2Fuploads%2FhvOtJHZYReiivoLQhxHj%2Fimage.png?alt=media&amp;token=cbcf3e46-5a0f-4436-acd6-82119f934c6f" alt=""><figcaption></figcaption></figure>

The "Goal-achieved condition" can be expressed as a mathematical expression producing a boolean value. It works exactly the same as the "Condition" field.&#x20;

Have a look at [Rule Language](/platform-manual/rules/rule-language.md) to see the full feature set of the expression language.

When a "Goal-achieved condition" has been specified, then whenever a notification was delivered, then it evaluates periodically this condition until it either becomes 'true' (i.e. measures *goal achieved*), or until it 7 days have passed.


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