# Changing Runtime Setting

**Runtime is used to define iterations, parameter usage, environment settings and other options which include re-running a failed test and collecting browser logs.** 

Head over to Monitors and select Runtime

![](https://1835512707-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LuDeDlFo7eLPBFbUgtb%2F-MSYOdEEqLXxK6_IUMuV%2F-MSYPoBdw1E0B5Fiw8TK%2Fimage.png?alt=media\&token=0ac0e092-02d9-4854-8e0d-6e5c346ee83a)

We can keep the test as a single iteration, or set it to a specific number by selecting **Multiple iterations** option and selecting the desired number of iterations. We can also match the number of iteration to the number of parameters available, by selecting **Use all parameters**

{% hint style="info" %}
**Your test script must have a parameters file attached to it in order to use them**
{% endhint %}

To add parameters go to your test script and select parameters then simply upload your file.

![](https://1835512707-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LuDeDlFo7eLPBFbUgtb%2F-MSYQY10Yva9bQ73HKTE%2F-MSYS9sctpp7n9q48o7L%2Fimage.png?alt=media\&token=27f437a0-28b4-4ce8-b9a1-f7457614748e)

We can also choose a specific environment, if we don't have one yet, we can simply create one by clicking on **Manage Environments**  which will take us to the environments page

![](https://1835512707-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LuDeDlFo7eLPBFbUgtb%2F-MSYQY10Yva9bQ73HKTE%2F-MSYTkNNQvIlW9qlovXg%2Fimage.png?alt=media\&token=d07f5d9e-dbdd-462c-b5ad-2c979e7f6703)