I need to pass a collection of environment variables to a yml template so that those variables can be used for one of its task.

I developed this sample yml template named my-new-template.yml:

parameters:
- name: envTests
  type: object
  default: []

steps:

- powershell: |
     Write-Host "$env:variable1"
  displayName: 'Display environment'
  env:
    ${{ parameters.envTests }}

where practically I pass the collection as an object input parameter named envTests and then this object is passed as it is to the env group of my powershell task.

The solution was taken from this SO thread Set environment variables into azure devops pipelines step from template.

In my main pipeline I call that template this way:

- job: Job1
    pool:
      vmImage: 'ubuntu-latest'

    steps:
    - checkout: none

    - template: my-new-template.yml
      parameters:
        envTests:
          - name: variabile1
            value: valuevariabile1
          - name: variabile2
            value: valueVariabile2

    - template: my-new-template.yml

I make two calls just to see that build is not broken if no environment variables are provided. It seems good to me but I got this exception

my-new-template.yml (Line: 12, Col: 5): A sequence was not expected

Could someone please tell me what I’m doing wrong? Thanks a lot