# Variables
Terrakube workspace variables let you customize configurations and store information like static provider credentials. You can also reference this variables inside your Templates.
You can set [variables specifically for each workspace](#workspace-specific-variables) or you can create [global-variables](https://docs.terrakube.io/2.21.0/user-guide/organizations/global-variables "mention") to reuse the same variables across multiple workspaces.
### Workspace-Specific Variables
To view and manage a workspace's variables, go to the workspace and click the **Variables** tab.
The **Variables** page appears, showing all workspace-specific variables. This is where you can add, edit, and delete workspace-specific variables.
There are 2 kinds of Variables:
* [Terraform Variables](#terraform-variables)
* [Environment Variables](#environment-variables)
### Terraform Variables
These Terraform variables are set using a terraform.tfvars file. To use interpolation or set a non-string value for a variable, click its HCL checkbox.
#### Add a Terraform Variable
Go to the workspace **Variables** page and in the *Terraform Variables* section click the **Add variable** button.
In the popup, provide the required values. Use the below table as reference:
| Field | Description |
| ----------- | ----------------------------------------------------------------------------------------------------------------------------------------- |
| Key | Unique variable name |
| Value | Key value |
| Description | Free text to document the reason for this global variable |
| HCL | Parse this field as HashiCorp Configuration Language (HCL). This allows you to interpolate values at runtime. |
| Sensitive | Sensitive variables are never shown in the UI or API. They may appear in Terraform logs if your configuration is designed to output them. |
Finally click the **Save variable** button and the variable will be created.
#### Edit a Terraform Variable
Click the **Edit** button next to the variable you want to edit.
Make any desired changes and click **Save variable.**
#### Delete a Terraform Variable
Click the **Delete** button next to the variable you want to delete.
Click **Yes** to confirm your action.
### Environment Variables
These variables are set in Terraform's shell environment using export.
#### Add an Environment Variable
Go to the workspace **Variables** page and in the *Environment Variables* section click the **Add variable** button.
In the popup, provide the required values. Use the below table as reference:
| Field | Description |
| ----------- | ----------------------------------------------------------------------------------------------------------------------------------------- |
| Key | Unique variable name |
| Value | Key value |
| Description | Free text to document the reason for this global variable |
| HCL | Parse this field as HashiCorp Configuration Language (HCL). This allows you to interpolate values at runtime. |
| Sensitive | Sensitive variables are never shown in the UI or API. They may appear in Terraform logs if your configuration is designed to output them. |
Finally click the **Save variable** button and the variable will be created.
#### Edit an Environment Variable
Click the **Edit** button next to the variable you want to edit.
Make any desired changes and click **Save variable.**
#### Delete an Environment Variable
Click the **Delete** button next to the variable you want to delete.
Click **Yes** to confirm your action.
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