# Start Timer

Starts a specified timer.

Action available for the following operating systems:

![](https://3821468174-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LrTlA1suFa5N48x_83N%2F-MAlPVpH3WRwBy16c7JY%2F-MAlQBZuuTnc6hyzKSVQ%2Fimage.png?alt=media\&token=5c9534b7-ca05-4ac4-b408-2207cd5a5295)

### Parameters

* **Timer** *\<unquoted string> -* The id of the timer that user wants to use. There are 10 handlers for timers (per form), from 1 to 10. It's also possible use a handler for timer in a dynamic way, using the value for this parameter *dynamic*.
* **Frequency** *\<numeric> -* The frequency, in milliseconds, of the timer.
* **Action Set** *\<radiobox> -* This parameter allows to choose what action set is runned when the timer is activated. It is possible to choose a **Global Action Set** or a **Local Action Set**.
* **Thread Mode** *\<checkbox> -* This parameter defines if the user wants to run the timer in thread mode or not. The possible values for this parameter are: *Yes*, *No* or *dynamic*.&#x20;

{% hint style="warning" %}
If this action is executed in Thread Mode, the Actions and Variables windows in the Simulator may crash.
{% endhint %}