How to assign conditional value to variable in Azure DevOps?

Question

I am trying to assign conditional value to an environment variable in Azure DevOps but it is not working. This is my pipeline code:

pr: none
trigger: none

stages:
  - stage: Mail
    variables:
    - group: API_Key
    jobs:
      - job: Sending_Email
        variables:
          ${{ if ne( variables['RecipientEmail'], '' ) }}:
            EmailId: $(RecipientEmail)
          ${{ if eq( variables['RecipientEmail'], '' ) }}:
            EmailId: $(DefaultEmailId)
        steps:
           - script: echo Mail id after condition is - $(EmailId)

Here I have taken 2 environment variable "RecipientEmail" and "DefaultEmailId" and on the basis of that I want to assign value to the new variable "EmailId". But it not working. In both the cases it is picking up the "DefaultEmailId" value.

For example: DefaultEmailId: [email protected] RecipientEmail: [email protected]

Ideal Output: Mail id after condition is - [email protected]

Current Output: Mail id after condition is - [email protected]

Also In this I am getting a warning: "Duplicate Key" while defining the "EmailId" Variable condition.

Answer 1

If DefaultEmailId: [email protected] and RecipientEmail: [email protected] are set in the following variable group: API_Key, we can see the same issue.

After researching, we find that there is a suggestion ticket about it: https://developercommunity.visualstudio.com/t/azure-pipelines-yaml-set-variable-based-on-conditi/690246, you can vote and follow this ticket. You can also create a new suggestion ticket here. The product group will review these tickets regularly, and consider take it as roadmap.

As a workaround, you could set variables in scripts.

- task: PowerShell@2
  inputs:
    targetType: 'inline'
    script: |
      if ('$(RecipientEmail)' -eq '') {
        Write-Host "##vso[task.setvariable variable=EmailId]$(DefaultEmailId)"
      } else {
        Write-Host "##vso[task.setvariable variable=EmailId]$(RecipientEmail)"
      }
- script: |
    echo Mail id after condition is -  $(EmailId)