> ## Documentation Index > Fetch the complete documentation index at: https://help.ondeckapps.com/llms.txt > Use this file to discover all available pages before exploring further. # Shared values and variables: define once, use everywhere > Use the Variables window to define values once and reuse them across text inputs and automations. The Variables window lets you define a value once and use it across text inputs and automations, instead of retyping it in each place. When the value changes, everywhere that uses it stays consistent. ## Open the Variables window Choose `Window > Variables` or `View > Variables`. The window has two sections: * **Suggested Variables:** values Relay offers automatically, grouped by source. Wireless telemetry from Shure devices appears here. * **Custom Variables:** values you add yourself. ## Suggested wireless variables Relay suggests a variable for each metric a wireless channel reports: **Audio**, **Battery %**, and **RF**. Each suggestion is named after the device and channel you saved, followed by the metric, and shows its device, channel, and metric underneath. For example, the battery level of a channel called `01-DRUMS` on device `IEM3.101` appears as `iem3_101_01_drums_battery`. Each row also shows its status, such as **Never received** until Relay has heard from the device. Each row also has `+` and `−` controls. Because suggestions use the names you saved for your devices, a battery or RF value is easy to recognize. See [Wireless devices](/relay/integrations/wireless-devices) for how to add and name your devices. ## Add a custom variable 1. Open the Variables window. 2. Select the `+` button in the window toolbar (**Add Manual Variable**). 3. Enter a **Variable name**. The **Source** is set to **Manual**. 4. Choose `Add`. Use the search button to find a variable in a long list. New Variable sheet with a Variable name field and a Source menu set to Manual ## Where you can use them * **Text inputs**, such as the [Text module](/relay/dashboards/modules/utility#text). * **Automations**, alongside the [variable utility nodes](/relay/dashboards/nodes/utilities) in Automation View. ## Related Use variables inside graphs. Wireless telemetry variables are suggested for live production.