# Configuring Environment Variables for the connectware-agent Helm Chart

To define a set of environment variables to be applied to the protocol-mapper agent, use the env list of `name` and `value` pairs inside the agents entry in the `protocolMapperAgents` section of your `values.yaml` file.

**Example**

{% code lineNumbers="true" %}

```yaml
protocolMapperAgents:
  - name: bender-robots
    connectwareHost: connectware.cybus # adjust to actual hostname of Connectware
    env:
      - name: CYBUS_PROTOCOL_MAPPER_PASSWORD
        value: ooth9oon7Taim]oo
      - name: CUSTOM_ENV_VARIABLE_FOO
        value: bar
```

{% endcode %}

## Unsetting protocolMapperAgentDefaults Environment Variables

If you used the list value `env` in the `protocolMapperAgentDefaults` section of your `values.yaml` file, you can unset them for individual agents by setting the value of `env` to `[]` inside the agents entry in the `protocolMapperAgents` context of your `values.yaml`.

**Example**

{% code lineNumbers="true" %}

```yaml
protocolMapperAgentDefaults:
  connectwareHost: connectware.cybus # adjust to actual hostname of Connectware
  env:
    - name: CUSTOM_ENV_VARIABLE_FOO
      value: bar
protocolMapperAgents:
  - name: bender-robots # this agent will have the ENV CUSTOM_ENV_VARIABLE_FOO
  - name: welder-robots # this agent will NOT have the ENV CUSTOM_ENV_VARIABLE_FOO
    env: []
```

{% endcode %}