## Use a Textbox Variable

Use a `Textbox` variable to let users input freeform text at runtime, such as a dynamic filter value or manual override.

### General Settings

Same fields as other variable types:
\* **Name** — Internal reference (e.g., `$env`)
\* **Label** — Display name shown in the dashboard
\* **Description** — Optional help text

### Text Options

- **Default value** — Optional preset value (e.g., `prod`, `us-east-1`, `*`)

### Use Cases

Textbox variables are useful when:

- You want to test specific values without listing all possibilities
- You use regex or wildcards in metric filters
- You want maximum input flexibility

|     |     |
| --- | --- |
|  | Textbox values must match the expected query format in your panels.