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title: How to add parameters in the dashboard chart settings in DataLens On-premises
description: >-
Follow this guide to add parameters in the dashboard chart settings in
DataLens On-premises.
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---
# Adding parameters in the dashboard chart settings in DataLens On-premises
To set a [parameter](../../dashboard/dashboard_parameters.md):
1. In the left-hand panel, click **Dashboards** and select the dashboard you need. If you do not have a dashboard, [create one](../dashboard/create.md).
1. In the top-right corner, click **Edit**.
1. Select a chart for which you want to set a new parameter.
1. In the top-right corner of the chart, click .
1. In the window that opens, click **Parameters**.
1. Click **Add parameter** at the bottom of the list.
1. In the **Name** column, enter the parameter name (key).
1. In the **Value** column, click and set a value for the parameter. You can set multiple values.
1. Click **Save**.
1. In the top-right corner of the dashboard edit window, click **Save**.
{% cut "Chart on a dashboard without a parameter" %}
{% endcut %}
{% cut "Chart on a dashboard with a parameter" %}
{% endcut %}
#### Example of parameters with intervals {#parameter-interval-examples}
{% cut "Example of adding a parameter with a date interval" %}
To set the date and time [interval](../../dashboard/dashboard_parameters.md#interval) between `03-08-2018 09:00:00` and `10-08-2018 10:00:00`, set the parameter to `__interval_2018-08-03T09:00:00_2018-08-10T10:00:00`.
{% endcut %}
{% cut "Example of adding a parameter with a relative date" %}
To set the date and time interval from the beginning of the last week of 2018 until today, set the parameter to `__interval_2018-12-23___relative_+0d`.
To build relative statistics for the beginning of the year, change `__relative_-0d` to `__relative_-0y_sy`.
{% note info %}
If castings are not specified, then for units of day and longer, the time is cast to the start of the day, i.e., `00:00:00.000`; for shorter units, the current time is used.
{% endnote %}
{% endcut %}