Cannot add environment variable through Ebextensions

Question

I'm using .ebextensions to create VPCEndpoints so in the **Resources** section I've addded the needed section for the VPCEndpoint. Then after that in the  **option_settings** section I'm trying to add an environment variable in my elastic beanstalk application referencing the created VPCEndpoint, but when i check the environment variables from the elastic beanstalk console the value is added as a plain text not the Ref of the VPCEndpoint
(Check the screenshot)
So how can i make it interpret the Ref of the endpoint ?

![Enter image description here](/media/postImages/original/IMkQEkAlsLRyCG5pYs1i8hkA)

```
Resources:
  NewsonarVPCEndpoint:
    Type: AWS::EC2::VPCEndpoint
    Properties:
      PrivateDnsEnabled: false
      SecurityGroupIds:
        - {"Fn::GetOptionSetting": {"Namespace": "aws:elasticbeanstalk:application:environment", "OptionName": "ALLOW_INBOUND_FROM_VPC_SECURITY_GROUP", "DefaultValue": "default_value"}}
      ServiceName: {
              "Fn::Join": [
                "", [
                  "com.amazonaws.vpce.",{"Fn::GetOptionSetting": {"Namespace": "aws:elasticbeanstalk:application:environment", "OptionName": "AWS_REGION", "DefaultValue": "us-east-1"}},".",{"Ref": "sonarVPCEndpointService"}]]
            }
      SubnetIds:
        - { "Ref": "Subnet1Id" }
        - { "Ref": "Subnet2Id" }
        - { "Ref": "Subnet3Id" }
      VpcEndpointType: Interface
      VpcId: { "Ref": "VpcId" }

option_settings:
  aws:elasticbeanstalk:application:environment:
    VPC_ENDPOINT: '`{"Ref" : "NewsonarVPCEndpoint"}`'

```

Answer

Hello,

If you use an AWS CloudFormation function to define an environment property, the Elastic Beanstalk console displays the value of the property before the function is evaluated. You can use the [get-config platform script ](https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/custom-platforms-scripts.html) to confirm the values of environment properties that are available to your application. See [Environment properties and other software settings](https://docs.aws.amazon.com/elasticbeanstalk/latest/dg/environments-cfg-softwaresettings.html#environments-cfg-softwaresettings-configfiles).

Cannot add environment variable through Ebextensions

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