# 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 %}