> For the complete documentation index, see [llms.txt](https://docs.auditboardanalytics.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.auditboardanalytics.com/workflows/parameters.md).

# Parameters

Parameters are powerful tools used to dynamically customize a workflow's results. Parameters can be strings, numbers, dates, boolean values and more. They can also be based off of values in tables/columns in your workflow.

<figure><img src="/files/XRw1NPhEy9PRKrCW2pF1" alt=""><figcaption><p>Creating a parameter</p></figcaption></figure>

### Create your own Parameter

To create your own parameter simply click on the plus circle in the top right corner of your canvas and fill out the form. Once the parameter is created, apply it to your workflow by including it in a formula in either the Filter or Edit Columns tools. Parameters will show up in the expression builder with the format `{param!example_parameter}`.

### How to use Parameters

There are two ways in which parameters can be used in an Analytics workflow: in the Expression Builder and through Templating.

### Expression Builder

Parameters can be used in the expression builder to create dynamic formulas. Simply start to type your parameter name into your formula and it will show up as a selectable option with the `{x}` icon.

The expression builder can be found in the [Add Columns](/tools/transform/add-columns.md), [Filter](/tools/transform/filter.md),  and [Validate](/tools/clean/validate.md) tools and will always be represented with the `{param!example_parameter}` format.

### Templating

Parameters can also be used in your workflow outside of the Expression Builder. This is through Analytics's Templating tool. There are many different ways to use templating throughout Analytics workflows, so we'll walk through each one here.

###

### Tool Text Boxes

Other tools within Analytics Workflows also allow you use Templating while working with your data.

* [Find Replace](/tools/clean/find-replace.md)
* [Validate](/tools/clean/validate.md)
* [Chart](https://github.com/soxhub/cascade-gitbook/blob/main/workflows/broken-reference/README.md)
* [Publish via Email](/tools/publish/publish-via-email.md)
* [Sample](/tools/clean/sample.md)

For each of these workflows, parameters can be used in any of the available text boxes. Use Templating to dynamically replace values, name or describe validations, or even label chart axes.


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