Merge environment variables for lambda component in Greengrass v2 deployment configuration

Question

Hello, I'm reading about [creating Greengrass v2 deployments and using merge updates](https://docs.aws.amazon.com/greengrass/v2/developerguide/update-component-configurations.html#merge-configuration-update).

The configuration of my lambda component looks something like that and works well. 
    {
      "lambdaFunction": {
        ...
        "componentLambdaParameters": {
          ...
          "environmentVariables": {
            "VAR_1": "value 1",
            "VAR_2": "value 2"
          }
        }
      }
    }

In my case I want to merge update environment variables during deployment for my component e.g. "VAR_2": "new value 2"

In my deployment config I'm trying something like below but doesn't work: 
    ...
    "configurationUpdate": {
      "merge": "{\"environmentVariables\":{\"VAR_2\":\"new value 2\"}}"
    }

Could you please help?

yitingb · Accepted Answer

Hi,
To update the environment variable for lambda components is different with creating lambda components, the correct way is to merge 
```
"lambdaExecutionParameters": {
    "EnvironmentVariables": {
      "VAR_2": "new value 2"
    }
  },
```
`lambdaExecutionParameters` and `EnvironmentVariables` are shown in the component recipe

Merge environment variables for lambda component in Greengrass v2 deployment configuration

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